Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
thanh hoa » thanh pho
van nhung » van nhuong, va nhung, van hung
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
hoa van » hoa dan, hoang van, hoa phan

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