Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh ban » doanh bat, doanh van, doanh nhan
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
va cham » va chat, va tham
luc vay » luc va, luc van, luoc van
ban cua » ban quan
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, v nang, may nang

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) or (ly nang)) xa hoi. lieu va cham luc vay doanh ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) xa hoi. lieu va cham luc vay doanh ban cua tre*.