Perhaps you should try some spelling variations:
hanh huong » thanh huong, anh huong, manh huong
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
huong cua » dung cua
dang cong » dung cong
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo hieu lang - hanh huong cua dang cong tan ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo hieu lang - hanh huong cua dang cong tan ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh huong cua dang cong tan ((toan ban) or (van ban))*.