Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trung chan » trung phan, trong chan, trung can
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
chan dung » van dung, dan dung
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 chan dung ((cong tac) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung chan dung ((cong tac) OR (cong thanh)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung chan dung ((cong tac) or (cong thanh)) toan cau*.