Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
hieu lang » chieu sang, hieu quang, nhieu tang
dang cong » dung cong
hoi hieu » hoi phieu, hoi tieu, moi hieu
tinh cua » trinh cua, sinh cua, tinh chat
cua dang » cua cong, cua ban
cong dan » cong san, cong tan, huong dan

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

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