Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
danh tai » doanh tai, dinh tai, hanh tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
buu tre » cuu tre
cam tu » cam thu, nam tu, dam tu

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: te sach ky ((nang xa) OR (nang x)) hoi. hieu ve ((nam thuc) OR (cam tu)) va danh tai buu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) OR (nang x)) hoi. hieu ve ((nam thuc) or (cam tu)) va danh tai buu tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((nang xa) OR (nang x)) hoi. hieu ve ((nam thuc) or (cam tu)) va danh tai buu tre*.