Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
co sach » bo sach, cuon sach, hoc sach
nang ma » tang ma, sang ma, nang cao
van dau » phan dau
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
van va » van vat, van van, ban va

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) or (co sach)) y nang ma hoi. hieu ((van dau) or (van dao)) tuc va doanh van va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (co sach)) y nang ma hoi. hieu ((van dau) OR (van dao)) tuc va doanh van va triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (co sach)) y nang ma hoi. hieu ((van dau) or (van dao)) tuc va doanh van va triet*.