Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trung tuan » trung thanh, trung tam, tran tuan
truong cao » truong dai
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trung cap » trung tam
trai tuan » tran tuan, tri tuan, tai tuan
cong tac » cong ty
tac trai » tam trai, khac trai, rac thai

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh ((trung tuan) OR (((trung cap) OR (truong cao)))) thong cong tac trai tuan~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung tuan) or (((trung cap) OR (truong cao)))) thong cong tac trai tuan~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung tuan) or (((trung cap) OR (truong cao)))) thong cong tac trai tuan*.