Perhaps you should try some spelling variations:
anh truong » manh truong, anh thuong, anh trong
nhung cong » dung cong, thong cong, hang cong
hieu quan » hieu qua, lieu quan, thien quan
truong va » truong dai, truong cao, truong dao
hoc hieu » hoc thieu, hoc hien, doc hieu
dan luan » doanh luan, hang luan, quan luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu quan - anh truong va nhung cong ((tang luan) or (((dan luan) or (dung luan)))) van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu quan - anh truong va nhung cong ((tang luan) OR (((dan luan) OR (dung luan)))) van.
• Adding a wildcard symbol may retrieve word variants: hoc hieu quan - anh truong va nhung cong ((tang luan) or (((dan luan) or (dung luan)))) van*.