Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
thanh tran » thanh trang, thanh toan, thanh tra
hanh tang » hanh trang, hanh mang, hanh tung
dong cong » duong cong, dung cong, dang cong
theo chu » theo chieu, cho chu, chao chu
chu xanh » chu manh, chieu xanh, chua xang
anh tang » anh bang, anh dang, anh nang
tran cao » toan cao, tran chau, trang cho

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu xanh - ((hanh tang) or (anh tang)) van dong cong thanh tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu xanh - ((hanh tang) OR (anh tang)) van dong cong thanh tran cao.
• Adding a wildcard symbol may retrieve word variants: theo chu xanh - ((hanh tang) or (anh tang)) van dong cong thanh tran cao*.