Perhaps you should try some spelling variations:
cham luc » cham soc, cham cuu, chat lua
nhan luc » nang luc
tinh de » tinh da, sinh de, tinh he
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
de cua » le cua, te cua, dieu cua
x hoi » xa hoi, o hoi, x ho

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: ((tu cac) OR (su sach)) ky nang x hoi. hieu va ((cham luc) OR (nhan luc)) va tinh de cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (su sach)) ky nang x hoi. hieu va ((cham luc) OR (nhan luc)) va tinh de cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (su sach)) ky nang x hoi. hieu va ((cham luc) OR (nhan luc)) va tinh de cua tre*.