Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
nang xa » nang x, lang xa, nang ma
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
tu cam » tu cham, tu cac, tu nam
cam ky » cao ky, cac 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 cam ky nang xa hoi. hieu van cham soc ((va hanh) or (va dan)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cam ky nang xa hoi. hieu van cham soc ((va hanh) OR (va dan)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang xa hoi. hieu van cham soc ((va hanh) or (va dan)) di cua tre*.