Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
tuan dung » tuan duong, tran dung, tan dung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
toan cau » 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 - ((thanh trung) OR (thanh tung)) tuan dung ((cong tan) or (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((thanh trung) OR (thanh tung)) tuan dung ((cong tan) OR (cong tac)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((thanh trung) OR (thanh tung)) tuan dung ((cong tan) or (cong tac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((thanh trung) OR (thanh tung)) tuan dung ((cong tan) or (cong tac)) toan cau*.