Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
ho chieu » hoc thieu, doi chieu, mot chieu
tranh va » tranh van, trang va, trinh va
cong van » cong vang, song van, cong tan
cong san » cong tac
va dung » van dung, va duong, vat dung
tan tap » toan tap, han tap, tan tat

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

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