Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hac » van hoc, van ha, van hai
hac tuc » thac toc, thai tuc
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
tuc va » thuc va, truc va, tuc xa
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: tu cac ky nang x hoi. hieu van hac tuc va danh vi ((cuu tre) OR (cua tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang x hoi. hieu van hac tuc va danh vi ((cuu tre) OR (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu van hac tuc va danh vi ((cuu tre) OR (cua tre))*.