Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
thanh van » thanh san, thanh toan, thanh phan
thanh hai » thanh phan, thanh hoa, thanh san
trung ha » trung hoc, trung cap
cong tan » cong tac, cong san, cong thanh

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 ha) OR (trung tam)) nhung cong tan ((thanh van) OR (thanh hai))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trung ha) OR (trung tam)) nhung cong tan ((thanh van) or (thanh hai))~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trung ha) OR (trung tam)) nhung cong tan ((thanh van) or (thanh hai))*.