Perhaps you should try some spelling variations:
hanh dai » hanh tai, hanh dao, vanh dai
cay phoi » cap phoi, cay cho, gap phoi
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
tay hoi » tay ho, tao hoi, tay thai
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet
va cao » va co, va dao, va bao
tuc va » thuc va, truc va, tuc xa

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 dang ((cay phoi) or (tay hoi)). hieu ((va cac) or (va cao)) tuc va hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky dang ((cay phoi) OR (tay hoi)). hieu ((va cac) OR (va cao)) tuc va hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky dang ((cay phoi) or (tay hoi)). hieu ((va cac) or (va cao)) tuc va hanh dai cua tre*.