Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
doi hieu » doi chieu, doc hieu, doi hien
cong dan » cong san, cong tan, huong dan
toan tap » toan ban

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

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