Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhiet nang » nhiet dong, viet nang, nhieu tang
cuong dung » tuong duong, ung dung, thong dung
dung doanh » dung dan, dung dong
hanh manh » hanh mang, lanh manh, hoang manh
doanh van » doan van, doanh va, doanh ban
va cuong » van cuong, va chuong, va cong
manh va » hanh va, anh va, minh va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (nhiet nang)) - hanh manh va cuong dung doanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (nhiet nang)) - hanh manh va cuong dung doanh van ban.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (nhiet nang)) - hanh manh va cuong dung doanh van ban*.