Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
hoc sach » hoc sinh, hoc cac, hoc anh
lang van » dang van, tang van, hoang van
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
va cham » va chat, va tham
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cuu tre » cua tre, cau tren, cau treo
di cuu » di cau, di cua, dinh cuu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ty ((nang x) OR (lang van)) hoi. hieu va cham thuc va hanh di cuu tre~.
• Adding a wildcard symbol may retrieve word variants: hoc sach ty ((nang x) or (lang van)) hoi. hieu va cham thuc va hanh di cuu tre*.