Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cua » vang cua, ban cua, dan cua
y nang » ky nang, ly nang, v nang
cua su » qua su

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

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