Perhaps you should try some spelling variations:
thu canh » thuc hanh, thu cong, thu ban
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
de cua » le cua, te cua, dieu cua
tu cai » tu cac, tu can, tu bai

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 (thu canh)) 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 (thu canh)) 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 (thu canh)) ky nang xa hoi. hieu vu cham soc ((ban hanh) or (va danh)) de cua tre*.