Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
chieu sach » chinh sach, chiet tach, chieu sang
hieu xanh » chieu xanh, hieu manh, hieu nganh
doanh cua » doanh luan
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
tan ban » toan ban, tang 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 xanh) or (chieu sach)) - hanh doanh cua ban ((cong vang) OR (cong lang)) tan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu sach)) - hanh doanh cua ban ((cong vang) OR (cong lang)) tan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu sach)) - hanh doanh cua ban ((cong vang) OR (cong lang)) tan ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu sach)) - hanh doanh cua ban ((cong vang) OR (cong lang)) tan ban*.