Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
nhung cong » dung cong, thong cong, hang cong
hieu sang » chieu sang, hieu lang, hieu quang
doc hieu » toc thieu, hoc thieu, hoc hien
doanh va » doan va, doanh tai, doanh cua
cong dan » cong san, cong tan, huong dan
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: doc hieu sang - chinh doanh va nhung cong dan ((toan ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sang - chinh doanh va nhung cong dan ((toan ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc hieu sang - chinh doanh va nhung cong dan ((toan ban) or (toan tap))*.