Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu lang » chieu sang, hieu lang, chi lang
luan phan » luan van, luan hoan
ho chieu » theo chieu, hoc thieu, mot chieu
luan han » luan hoan, luan van, luan san
cong tan » cong tac, cong san, cong thanh
van chat » cao chat
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu lang - doanh doanh ((luan han) or (luan phan)) cong tan van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu lang - doanh doanh ((luan han) OR (luan phan)) cong tan van chat*.