Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
cua tre » cua te, cuu tre, cua triet
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cac hoc » cach hoc, cac hop, bac hoc
cac loc » cac lop, cac toc, cac nuoc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
tu ban » thu ban, te ban
tu san » thu san, tu can, vu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu san) or (tu ban)) ky lang xa hoi. hieu va ((cac loc) or (cac hoc)) va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu san) OR (tu ban)) ky lang xa hoi. hieu va ((cac loc) OR (cac hoc)) va hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu san) or (tu ban)) ky lang xa hoi. hieu va ((cac loc) or (cac hoc)) va hanh vai cua tre*.