... requires a further clarification All the reasons above motivate me to conduct a research on economicality and redundancy in requesting in English and Vietnamese culture with the hope of discovering answers ... Queensland, Australia, among whom 26 are Australian, are British and the rest is from English speaking world such as New Zealand, Canada, America, etc English is used as target language and its variants, ... instructions and explanation in Vietnamese to avoid any misunderstanding and ambiguity Afterwards, all the papers of questionnaire were collected carefully to ensure the quantity of data 2.5 Data analysis...