Perhaps you should try some spelling variations:
nhieu tang » chieu sang, hieu lang, nhiet nang
chieu sach » chinh sach, chiet tach, chieu sang
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh hoac » doanh hoan, doanh khoa, danh hoa
hoac khong » hoa khong, hoc khong, hay khong
khong cong » thong cong, khong cang, chong cong
cong anh » cong danh, dong anh, hong anh
tuan ban » tuan bang, toan ban, luan 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 ((nhieu tang) or (chieu sach)) - hanh doanh hoac khong cong anh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((nhieu tang) OR (chieu sach)) - hanh doanh hoac khong cong anh tuan ban*.