Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
ban hanh » ban hang
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
tu cai » tu cac, tu can, tu bai
cai ky » cao ky, cac ky, cam ky
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cai ky dang xa hoi. hieu ve cham luc ((ban hanh) or (va dinh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cai ky dang xa hoi. hieu ve cham luc ((ban hanh) OR (va dinh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cai ky dang xa hoi. hieu ve cham luc ((ban hanh) or (va dinh)) di cua tre*.