Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
nhung cong » dung cong, thong cong, hang cong
van thanh » ban thanh, van tuan
ho chieu » hoc thieu, doi chieu, mot chieu
khoan va » doan va, nhan va, toan va
cong van » cong vang, cong san, song van
thanh tu » hanh tu, nhanh tu, thanh tung

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: ((ho chieu) OR (theo chieu)) xanh - doanh ((khoan va) OR (khoa ma)) nhung cong van thanh tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (theo chieu)) xanh - doanh ((khoan va) or (khoa ma)) nhung cong van thanh tu~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (theo chieu)) xanh - doanh ((khoan va) or (khoa ma)) nhung cong van thanh tu*.