Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
va hanh » van hanh, va thanh, va danh
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet
va dan » ca dan, va dao, va dau

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 hoi. hieu vu chat xuc ((va hanh) or (va dan)) dau cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. hieu vu chat xuc ((va hanh) OR (va dan)) dau cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang cao hoi. hieu vu chat xuc ((va hanh) or (va dan)) dau cua tre*.