Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
cau treo » cau theo, cau triet, cau trieu
cau tren » cu tren, dau tren, ca tren
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
cua tre » cua te, cuu tre, cua triet
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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

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