Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
thanh ve » hanh ve, thanh va, thanh vien
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
luc va » duc va, loc va
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 cham ((tuc va) or (luc va)) thanh ve ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang x hoi. hieu van cham ((tuc va) OR (luc va)) thanh ve ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang x hoi. hieu van cham ((tuc va) or (luc va)) thanh ve ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang x hoi. hieu van cham ((tuc va) or (luc va)) thanh ve ((cua tre) OR (cuu tre))*.