Perhaps you should try some spelling variations:
cham thuc » nham thuc, pham thuc, tham thuc
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
sach uu » sach luu, sach tu, sach xu

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 ty) OR (sach uu)) ((nang xa) OR (nang ma)) hoi. hieu ve cham thuc va hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach uu)) ((nang xa) OR (nang ma)) hoi. hieu ve cham thuc va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach uu)) ((nang xa) OR (nang ma)) hoi. hieu ve cham thuc va hanh vai cua tre*.