Perhaps you should try some spelling variations:
xuong song » vung song, xuong san
thi chieu » thi chien, thi hieu, theo chieu
doi chieu » doc hieu, doi chi, ho chieu
tac xuong » khac xuong, tac thuong, tac dung
cong tac » cong ty
song van » hoang van, trong van, duong van
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi chieu) or (doi chieu)) xanh - thanh cong tac xuong song van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi chieu) OR (doi chieu)) xanh - thanh cong tac xuong song van van ban.
• Adding a wildcard symbol may retrieve word variants: ((thi chieu) or (doi chieu)) xanh - thanh cong tac xuong song van van ban*.