Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tran » thanh trang, thanh toan, thanh tra
thong cong » tong cong, thong thong, phong chong
hoc thieu » toc thieu, hoc hien
hanh tran » hanh trang, hanh tram, thanh trang
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - ((hanh tran) or (thanh tran)) van ((thong cong) OR (trong cong)) van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh tran) OR (thanh tran)) van ((thong cong) OR (trong cong)) van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((hanh tran) or (thanh tran)) van ((thong cong) OR (trong cong)) van toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh tran) or (thanh tran)) van ((thong cong) OR (trong cong)) van toan cao*.