Perhaps you should try some spelling variations:
nang cay » nang cao, nang cap, nang cai
cay phoi » cap phoi, tay hoi, cay cho
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
van cam » van nam, van lam, van cau
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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

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