Perhaps you should try some spelling variations:
hanh tran » hanh trang, thanh tran, hanh tram
dang cong » dung cong
cong sang » cong san, cong lang, cong vang
sang than » cang thang, dang thanh, sang tao
ho chieu » theo chieu, hoc thieu, doi chieu
tran van » luan van
van dang » van dong, van dung, van nang
than cao » toan cao, thai cao, than cap

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) or (theo tieu)) xanh - hanh tran van dang cong sang than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo tieu)) xanh - hanh tran van dang cong sang than cao.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo tieu)) xanh - hanh tran van dang cong sang than cao*.