Perhaps you should try some spelling variations:
can thuc » dan thuc, van thuc, cay thuc
hanh tai » thanh tai, hang tai, han tai
co sach » bo sach, cuon sach, hoc sach
duc tre » duoc tren, duc tien
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
sach ly » sach y, sach lo, sach ty
hieu ve » hieu va, hieu van
hang xa » hoang xa, hang ca, lang xa
ve can » ve canh, ve cac, ve ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: co sach ly ((hang xa) or (hang va)) hoi. hieu ve can thuc va hanh tai ((duc tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: co sach ly ((hang xa) OR (hang va)) hoi. hieu ve can thuc va hanh tai ((duc tre) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: co sach ly ((hang xa) or (hang va)) hoi. hieu ve can thuc va hanh tai ((duc tre) or (cua tre))*.