Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cuu tre » cua tre, cau treo
van cau » van dau, van hau, van chat
cau xuc » cam xuc, cau luc, cau truc
ky dang » ky nang, ky danh
ky lang » ky nang, ky tang, tay lang
xuc va » duc va, tuc va, luc va
tu san » thu san, tu ban, tu can

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ((ky lang) OR (ky dang)) xa hoi. hieu van cau xuc va thanh vi ((cuu tre) OR (cau tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ((ky lang) OR (ky dang)) xa hoi. hieu van cau xuc va thanh vi ((cuu tre) or (cau tren))~".
• Adding a wildcard symbol may retrieve word variants: tu san ((ky lang) OR (ky dang)) xa hoi. hieu van cau xuc va thanh vi ((cuu tre) or (cau tren))*.