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On the menu to the right Click Protect Document and Click Encrypt with Password.     Encrypt Document  3. m, thay th   -  -   -   -   - Trong th -  -  -  -   -                       -  -  -  -                     -  -  -   -  -    -    -   -  -  -   -  -  -  -   -  -  Bảng các ký tự đại diện     ?   *   <         >         []   [-] -              [!x-z] -     \ tr \                   \  \2 \  4. Ki,                      Spelling and Grammar   tra  tab Review Ribbon Spelling & Grammar Proofing F7).      . Settings, Print   Word 2010 h tr st password bo v n vo mt cao.      tab. Encrypt with Password OKpassword  OK. Click the File tab, then Click Info. On the menu to the right Click Protect Document and Click Encrypt with Password. .  -  Bảng các ký tự đại diện     ?  