Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
luong cong » dung cong, cong cong, tong cong
tranh van » tran van, trinh van, thanh van
ho chieu » hoc thieu, doi chieu, mot chieu
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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 van ((luong cong) OR (trong cong)) van tuan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - canh tranh van ((luong cong) OR (trong cong)) van tuan cao~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - canh tranh van ((luong cong) OR (trong cong)) van tuan cao*.