Perhaps you should try some spelling variations:
van chao » van chat, van hao, van cho
hieu van » hieu va, thien van, lieu va
thai cuu » thai cua, tai cuc, thi cuc
va dinh » van dinh, va kinh, va tinh
va hanh » van hanh, va thanh, va danh
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
su can » su van, su cao, tu can
su cac » tu cac, su cao, eu cac

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) or (su can)) ky nang xa hoi. hieu van chao xu ((va hanh) or (va dinh)) thai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su can)) ky nang xa hoi. hieu van chao xu ((va hanh) OR (va dinh)) thai cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su can)) ky nang xa hoi. hieu van chao xu ((va hanh) or (va dinh)) thai cuu tre*.