Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
vat doanh » van doanh, vay doanh, va doanh
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va am » va lam, va cam
thuc » thu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. hieu ((ve am) or (va am)) thuc vat doanh van ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. hieu ((ve am) OR (va am)) thuc vat doanh van ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. hieu ((ve am) or (va am)) thuc vat doanh van ((cua triet) or (va triet))*.