Perhaps you should try some spelling variations:
thieu thanh » thien thanh, thi thanh, thu thanh
thanh hung » thanh huong, thanh tung, thanh trung
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
hung tuan » hung tran, quang tuan, trung tuan
tuan dong » tuan duong, quan dong, luan dong
cong san » cong tac
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 thanh - thanh hung tuan dong ((cong san) or (cong thanh)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu thanh - thanh hung tuan dong ((cong san) OR (cong thanh)) toan cau*.