Perhaps you should try some spelling variations:
thuong luong » theo luong, cong luong, thong thuong
lan thuong » han thuong, lan phuong, hang thuong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
hanh dung » thanh dung, anh dung, manh dung
hanh dong » anh dong, ha dong
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu tinh - ((hanh dung) OR (hanh dong)) lan thuong luong ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu tinh - ((hanh dung) OR (hanh dong)) lan thuong luong ((dan than) or (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - ((hanh dung) OR (hanh dong)) lan thuong luong ((dan than) or (ban than)) cau*.