Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van anh
van thanh » ban thanh, van tuan
sach doi » sach hoi, sach moi, sach dao
doi nang » dai nang, hoi nang, voi nang
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dao duc » giao duc, tao duoc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach doi nang xa hoi. hieu ve ((pham duc) or (dao duc)) ((van doanh) or (van thanh)) tri cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach doi nang xa hoi. hieu ve ((pham duc) OR (dao duc)) ((van doanh) OR (van thanh)) tri cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach doi nang xa hoi. hieu ve ((pham duc) or (dao duc)) ((van doanh) or (van thanh)) tri cua te*.