Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
dang cong » dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
tranh va » tranh van, trinh va, thanh va
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (theo chieu)) xanh - hanh ((tranh va) or (trang va)) dang cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (theo chieu)) xanh - hanh ((tranh va) OR (trang va)) dang cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (theo chieu)) xanh - hanh ((tranh va) or (trang va)) dang cong dan van ban*.