Perhaps you should try some spelling variations:
hieu lang » chieu sang, hieu quang, nhieu tang
huong cua » dung cua
cua bang » chua bang, cua ban, cua dang
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - anh huong cua bang ((cong dan) OR (cong san)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - anh huong cua bang ((cong dan) OR (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - anh huong cua bang ((cong dan) OR (cong san)) toan cao*.