Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cong thanh » dong thanh, cong trinh, truong thanh
hoc thieu » toc thieu, hoc hien
trang van » tran van, trang va, tang van
trong van » trong cac
cong tan » cong tac, cong san, cong ty
khan cap » khan ap, than cap, khoan cam

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 ((trang van) OR (trong van)) cuong ((cong tan) OR (cong thanh)) khan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh ((trang van) or (trong van)) cuong ((cong tan) OR (cong thanh)) khan cap~".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh ((trang van) or (trong van)) cuong ((cong tan) OR (cong thanh)) khan cap*.