Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
ban thanh » ban hanh, ban hang
cham luc » cham soc, nhan luc, cham cuu
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ((ky lang) or (ky dang)) xa hoi. hieu va cham luc ((van doanh) or (ban thanh)) tri cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky lang) OR (ky dang)) xa hoi. hieu va cham luc ((van doanh) OR (ban thanh)) tri cua tre.
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) or (ky dang)) xa hoi. hieu va cham luc ((van doanh) or (ban thanh)) tri cua tre*.