Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
danh tai » doanh tai, dinh tai, hanh tai
va cham » va chat, va tham
va danh » va dinh, va dan, va hanh
xay hoi » tay hoi, cay phoi, gay thoi
cua tre » cuu tre, cua triet, dua tren
hieu va » lieu va, hieu qua
ky dang » ky nang, ky danh
bao ky » cao ky, ban ky, bac ky
luc va » duc va, tuc va, loc va
cua te » cua tu

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

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