Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh van » doan van, doanh va, doanh ban
co sach » bo sach, cuon sach, hoc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ve phan » ke phan, ve phat, vi phan
va phan » van phan, va phat, va phap
duc van » duc va, duc tan, duc manh
van cua » vang cua, ban cua, dan cua
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ty nang x ho. hieu ((ve phan) OR (va phan)) duc van doanh van cua te~.
• Adding a wildcard symbol may retrieve word variants: co sach ty nang x ho. hieu ((ve phan) or (va phan)) duc van doanh van cua te*.