Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
ho chieu » hoc thieu, doi chieu, mot chieu
anh dang » anh dong, anh dung, anh bang
cua dong » chua dong, cua dang, cua nong
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: ((ho chieu) or (theo chieu)) sang - anh dang ((cua dong) OR (cua cong)) cong tac tren cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sang - anh dang ((cua dong) OR (cua cong)) cong tac tren cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sang - anh dang ((cua dong) OR (cua cong)) cong tac tren cau".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sang - anh dang ((cua dong) OR (cua cong)) cong tac tren cau*.