Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
van thong » van thuong, va thong, van thang
van phong » van dong, hai phong
ho chieu » hoc thieu, doi chieu, mot chieu
anh tang » anh bang, anh dang, anh nang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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)) xanh - anh tang ((van thong) OR (van phong)) cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - anh tang ((van thong) OR (van phong)) cong tac toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - anh tang ((van thong) OR (van phong)) cong tac toan tap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - anh tang ((van thong) OR (van phong)) cong tac toan tap*.