Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cam thuc » nam thuc, cam thu, can thuc
hanh vai » hanh vi, hanh va, hanh tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky danh » ky anh, ky dang
danh ma » anh ma, danh ca, hanh ma
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky danh ma hoa. hieu van ((cam thuc) or (am thuc)) va hanh vai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky danh ma hoa. hieu van ((cam thuc) OR (am thuc)) va hanh vai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky danh ma hoa. hieu van ((cam thuc) or (am thuc)) va hanh vai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ky danh ma hoa. hieu van ((cam thuc) or (am thuc)) va hanh vai ((cua tre) OR (cua te))*.