Perhaps you should try some spelling variations:
cau treo » cau theo, cau triet, cau trieu
cham xuc » cam xuc, chat xuc, cham soc
cau tren » cu tren, dau tren, ca tren
ban hanh » ban hang
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
xuc ban » duc ban, cuc ban, quoc ban
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre
cao hoc » co hoc, cho hoc, chat hoc
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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 sac ky nang cao hoc. hieu ve cham xuc ban hanh di ((((cuu tre) OR (cau tren))) OR (cau treo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang cao hoc. hieu ve cham xuc ban hanh di ((((cuu tre) OR (cau tren))) or (cau treo))~".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang cao hoc. hieu ve cham xuc ban hanh di ((((cuu tre) OR (cau tren))) or (cau treo))*.