Perhaps you should try some spelling variations:
chinh doanh » kinh doanh
chieu sang » chieu sach, chieu xanh, hieu lang
hien sang » hien trang, khien bang, thien bang
doanh van » doan van, doanh va, doanh ban
nang cong » nang song, dang cong, bang cong
van nang » van quang, van ban, van dong
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: hoc ((hien sang) OR (chieu sang)) - chinh doanh van nang cong dan ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sang) OR (chieu sang)) - chinh doanh van nang cong dan ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien sang) OR (chieu sang)) - chinh doanh van nang cong dan ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sang) OR (chieu sang)) - chinh doanh van nang cong dan ((toan tap) or (toan ban))*.