Perhaps you should try some spelling variations:
chieu lang » chieu sang, hieu lang, chi lang
doi chieu » doc hieu, doi chi, ho chieu
hanh tran » hanh trang, thanh tran, hanh tram
dang cong » dung cong
tran van » luan van
van dang » van dong, van dung, van nang
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.

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu lang - hanh tran van dang cong ((dan than) or (ban than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu lang - hanh tran van dang cong ((dan than) OR (ban than)) cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu lang - hanh tran van dang cong ((dan than) or (ban than)) cau*.