Perhaps you should try some spelling variations:
ban hanh » ban hang
cua tre » cua te, cuu tre, cua triet
va danh » va dinh, va dan, va hanh
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
nang xa » nang x, lang xa, nang ma
tu can » tu ban, tu cac, thu canh
de cua » le cua, te cua, dieu cua
tu cai » tu cac, tu bai, 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 can)) ky nang xa hoi. hieu vu cham soc ((ban hanh) or (va danh)) de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cai) OR (tu can)) ky nang xa hoi. hieu vu cham soc ((ban hanh) OR (va danh)) de cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cai) OR (tu can)) ky nang xa hoi. hieu vu cham soc ((ban hanh) or (va danh)) de cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cai) OR (tu can)) ky nang xa hoi. hieu vu cham soc ((ban hanh) or (va danh)) de cua tre*.