Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trung cap » truong cao, trung tam
tran tuan » tran quang, tran thanh, tranh luan
tran xuan » tran quang, tran van
dung cong » dung trong
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren
tran cau » tran chau, toan cau, ran cau

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 cap) or (((tran tuan) or (tran xuan)))) dung cong tac tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung cap) OR (((tran tuan) OR (tran xuan)))) dung cong tac tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cap) or (((tran tuan) or (tran xuan)))) dung cong tac tran cau*.