Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
ho chieu » theo chieu, hoc thieu, mot chieu
cua dung » cua dang, cua dong, qua dung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
than cao » toan cao, thai cao, than cap

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 (doi chieu)) xanh - canh tranh cua dung ((cong dan) OR (cong san)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) xanh - canh tranh cua dung ((cong dan) OR (cong san)) than cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (doi chieu)) xanh - canh tranh cua dung ((cong dan) OR (cong san)) than cao*".