Perhaps you should try some spelling variations:
ban hanh » ban hang
hieu ve » hieu va, hieu van
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
ma hoi » mai hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam

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 ky nang ((ma hoi) or (xa hoi)). hieu ve cam xuc ((van ban) or (ban hanh)) lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang ((ma hoi) OR (xa hoi)). hieu ve cam xuc ((van ban) OR (ban hanh)) lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu san ky nang ((ma hoi) or (xa hoi)). hieu ve cam xuc ((van ban) or (ban hanh)) lai cua tre*.