Perhaps you should try some spelling variations:
nhanh mang » nhanh lang, hanh mang, nhanh quang
theo chieu » ho chieu, theo chu, thi chieu
hanh tang » hanh trang, anh tang, hanh mang
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
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: ((theo chieu) or (theo tieu)) tinh - ((hanh tang) or (nhanh mang)) cua dong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo tieu)) tinh - ((hanh tang) OR (nhanh mang)) cua dong cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo tieu)) tinh - ((hanh tang) or (nhanh mang)) cua dong cong dan van ban*.