Perhaps you should try some spelling variations:
ban hang » ngan hang
cao hoat » cac hoat, co hoat, cao chat
chat xuc » chat huu, cam xuc, chao xu
cua tre » cua te, cua triet, dua tren
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ve chat » va chat, van chat
hieu ve » hieu va, hieu van
cuu tre » cau tren, cau treo

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cao hoat. hieu ve chat xuc ((ban hang) or (ban hanh)) vai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoat. hieu ve chat xuc ((ban hang) OR (ban hanh)) vai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoat. hieu ve chat xuc ((ban hang) or (ban hanh)) vai ((cua tre) or (cuu tre))*.