Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
chieu tinh » trieu tinh, lieu tinh, chau tinh
trung chan » trung phan, trong chan, trung can
chan dung » van dung, dan dung
cong tap » cuong tap, cong tac, tong tap
cong tan » cong tac, cong san, cong thanh
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) or (chieu tinh)) - thanh trung chan dung ((cong tap) OR (cong tan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu tinh)) - thanh trung chan dung ((cong tap) OR (cong tan)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu tinh)) - thanh trung chan dung ((cong tap) OR (cong tan)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu tinh)) - thanh trung chan dung ((cong tap) OR (cong tan)) toan cau*.