Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
cau treo » cau theo, cau tren, cau triet
xuc van » duc van, luc van, xuc ban
cuu tre » cua tre, cau tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((((cuu tre) OR (cau treo))) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((((cuu tre) OR (cau treo))) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((((cuu tre) OR (cau treo))) or (cua tu))".
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((((cuu tre) OR (cau treo))) or (cua tu))*.