Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
cap phoi » cap cho
cam truc » cau truc, nam truc, lam truoc
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
va hanh » van hanh, va danh, ban hanh
va cap » va cac, va dap, va cao
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de cua
ky va » ly va, ke va, my va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky va cap phoi. hieu ve cam truc ((va hanh) or (va thanh)) di cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky va cap phoi. hieu ve cam truc ((va hanh) OR (va thanh)) di cua vat.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky va cap phoi. hieu ve cam truc ((va hanh) or (va thanh)) di cua vat*.