Perhaps you should try some spelling variations:
chat luc » chat xuc, chat lua, nhan luc
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
doi cua » dai cua, hoi cua
va danh » va dinh, va dan, va hanh
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
ky dang » ky nang, ky danh
tu bai » tu ban, tu bat, te bai
tu cai » tu cac, tu can, tu cay

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) or (tu bai)) ky dang xa hoi. hieu ve chat luc ((ban hanh) or (va danh)) doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cai) OR (tu bai)) ky dang xa hoi. hieu ve chat luc ((ban hanh) OR (va danh)) doi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cai) or (tu bai)) ky dang xa hoi. hieu ve chat luc ((ban hanh) or (va danh)) doi cua tre*.