Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van chao » van chat, van hao, van cho
ban hanh » ban hang
than cua » nhan cua, thai cua, ban cua
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, cua triet
su cac » tu cac, su cao, su can
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: su cac ky nang x hoi. hieu van chao xu ((ban hanh) or (va danh)) than cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su cac ky nang x hoi. hieu van chao xu ((ban hanh) OR (va danh)) than cua tre.
• Adding a wildcard symbol may retrieve word variants: su cac ky nang x hoi. hieu van chao xu ((ban hanh) or (va danh)) than cua tre*.