Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
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
luc van » luoc van, luu van, duc van
tai cua » thai cua, tai cuc, tri cua
cua tre » cua te, cuu tre, cua triet
te cac » ve cac, te cao, de cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) OR (tu cac)) ((ky lang) or (ky dang)) xa hoi. hieu va cham luc van doanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (tu cac)) ((ky lang) OR (ky dang)) xa hoi. hieu va cham luc van doanh tai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) OR (tu cac)) ((ky lang) or (ky dang)) xa hoi. hieu va cham luc van doanh tai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te cac) OR (tu cac)) ((ky lang) or (ky dang)) xa hoi. hieu va cham luc van doanh tai cua tre*.