Perhaps you should try some spelling variations:
dam thuc » am thuc, dan thuc, nam thuc
danh tai » doanh tai, dinh tai, hanh tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
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.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) OR (nang ma)) hoi. hieu ve ((dam thuc) or (cam tu)) va danh tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (nang ma)) hoi. hieu ve ((dam 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 ma)) hoi. hieu ve ((dam thuc) or (cam tu)) va danh tai buu tre*".