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