Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
doanh hoan » doanh doanh, doanh khoa, doanh nhan
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong tac » cong ty
pham cau » phan cau, pham can, pha cau
pham ca » pham can, pham ma, pham va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - ((doanh hoan) or (kinh doanh)) cua nhung cong tac ((pham cau) or (pham ca))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - ((doanh hoan) OR (kinh doanh)) cua nhung cong tac ((pham cau) OR (pham ca)).
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - ((doanh hoan) or (kinh doanh)) cua nhung cong tac ((pham cau) or (pham ca))*.