Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
co sach » bo sach, cuon sach, hoc sach
sach ky » sac ky, sach y, sach ty
ve phan » ke phan, ve phat, vi phan
va phan » van phan, va phat, va phap
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ky nang x ho. hieu ((ve phan) OR (va phan)) duc va doanh van ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ky nang x ho. hieu ((ve phan) OR (va phan)) duc va doanh van ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "co sach ky nang x ho. hieu ((ve phan) OR (va phan)) duc va doanh van ((cua te) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: co sach ky nang x ho. hieu ((ve phan) OR (va phan)) duc va doanh van ((cua te) or (cua tu))*.