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 ran » tac can, tac van, tac quan
ran cau » van cau, ban cau, can 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 ran 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 ran cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung cap) or (((tran tuan) or (tran xuan)))) dung cong tac ran cau*.