Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
thanh vai » thanh hai, thanh van, thanh oai
cam thuc » am thuc, nam thuc, cam thu
hieu van » hieu va, thien van, hieu ve
te sach » toc sach
thuc va » thuc vat, thuc dan, thuc day
sach ky » sac ky, sach y, sach ty
dang ma » dang mau, dang mam, dang mat
ky dang » ky nang, ky danh
cua tre » cua te, cuu tre, cua triet

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 dang ma hoa. ((hieu van) or (lieu va)) cam thuc va ((thanh vai) or (thanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky dang ma hoa. ((hieu van) OR (lieu va)) cam thuc va ((thanh vai) OR (thanh tai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky dang ma hoa. ((hieu van) or (lieu va)) cam thuc va ((thanh vai) or (thanh tai)) cua tre*.