Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
hieu lang » chieu sang, hieu quang, nhieu tang
doanh cua » doanh luan
dung cong » dung trong
cong cong » cong dong, trong cong, dang cong
doi hieu » doi chieu, doc hieu, doi hien
toan tai » toan tap, doanh tai, toan cao
toan ban » van 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 doanh cua ((dung cong) or (cong cong)) dan ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - canh doanh cua ((dung cong) OR (cong cong)) dan ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - canh doanh cua ((dung cong) or (cong cong)) dan ((toan tai) or (toan ban))*.