Perhaps you should try some spelling variations:
thuong luong » theo luong, cong luong, thong thuong
luan thuong » luat thuong, lan thuong, luan phuong
doc hieu » toc thieu, hoc thieu
anh dung » anh dong, anh huong, sach dung
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc hien)) tinh - anh dung luan thuong luong ((dan than) OR (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) tinh - anh dung luan thuong luong ((dan than) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) or (hoc hien)) tinh - anh dung luan thuong luong ((dan than) OR (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) tinh - anh dung luan thuong luong ((dan than) OR (dan chan)) cau*.