Perhaps you should try some spelling variations:
tthanh trung » thanh tung, thanh trang, hanh trang
thanh trung » thanh tung
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
van dung » van dong, xay dung, tin dung
van toan » van tan, van thanh, manh toan
van tuan » van quan, van ban, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - ((tthanh trung) or (thanh trung)) van dung trong ((van toan) or (van tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((tthanh trung) OR (thanh trung)) van dung trong ((van toan) OR (van tuan)) cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((tthanh trung) or (thanh trung)) van dung trong ((van toan) or (van tuan)) cau*.