Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh tran
thanh thang » nhanh thang, thanh thanh, thanh hang
doi chieu » doc hieu, doi chi, mot chieu
nang cong » nang song, dang cong, bang cong
ho chieu » theo chieu, hoc thieu, mot chieu
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai
trai cao » tai cao, thai cao, trai chan
va nang » van nang, da nang, cam nang

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 (doi chieu)) xanh - ((thanh trang) OR (thanh thang)) va nang cong tac trai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - ((thanh trang) OR (thanh thang)) va nang cong tac trai cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - ((thanh trang) OR (thanh thang)) va nang cong tac trai cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) xanh - ((thanh trang) OR (thanh thang)) va nang cong tac trai cao*.