Perhaps you should try some spelling variations:
dung cong » dung trong
theo chu » theo chieu, cho chu, chao chu
chu sang » chu bang, thu sang, chieu sang
anh tang » anh dang, anh nang, anh sang
anh bang » anh hoang, anh quang, tinh bang
qua dung » quang dung, su dung, qua song
cong tac » cong ty
tac tren » rac tren, tai tren, tap tren
tren cau » tren ca, tren cay, tren tau

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sang - ((anh tang) or (anh bang)) qua dung cong tac tren cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sang - ((anh tang) OR (anh bang)) qua dung cong tac tren cau.
• Adding a wildcard symbol may retrieve word variants: theo chu sang - ((anh tang) or (anh bang)) qua dung cong tac tren cau*.