Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
cac xuc » cam xuc, chat xuc, cac cuoc
tu san » thu san, tu ban, tu can
cua tu » cua tuc, cua su, cua cu
san ky » sang ky, van ky, dan ky

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 tang xa hoi. hieu ve ((cac xuc) OR (cac nuoc)) van hanh vi ((cuu tre) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang xa hoi. hieu ve ((cac xuc) OR (cac nuoc)) van hanh vi ((cuu tre) or (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. hieu ve ((cac xuc) OR (cac nuoc)) van hanh vi ((cuu tre) or (cua tu))*.