Perhaps you should try some spelling variations:
anh truong » manh truong, anh thuong, anh trong
truong cua » truong ca, truong quan, truong cao
nhung cong » dung cong, thong cong, nhung don
hieu quan » hieu qua, lieu quan, thien quan
hang cong » dang cong, hang nong, bang cong
tang luan » dung luan
hoc hieu » hoc thieu, hoc hien, doc hieu

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 cua ((nhung cong) or (hang cong)) tang luan van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu quan - anh truong cua ((nhung cong) OR (hang cong)) tang luan van.
• Adding a wildcard symbol may retrieve word variants: hoc hieu quan - anh truong cua ((nhung cong) or (hang cong)) tang luan van*.