Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
cac loc » cac lop, cac hoc, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky nang xa hoi. hieu van ((cac loc) OR (cac toc)) va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. hieu van ((cac loc) OR (cac toc)) va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. hieu van ((cac loc) OR (cac toc)) va hanh vai cua tre*.