Perhaps you should try some spelling variations:
thuoc phap » thuoc phai, thuc pham, hoc phap
phap sinh » phau sinh, phai sinh, phap tinh
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu van » hieu va, thien van, lieu va
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
sinh te » kinh te, sinh de, sinh tu
van lam » van nam
sach ky » sac ky, sach y, sach ty
mang xa » lang xa, mang may, dang xay
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 ((mang xa) or (nang x)) hoi. hieu van lam thuoc phap sinh te ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((mang xa) OR (nang x)) hoi. hieu van lam thuoc phap sinh te ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((mang xa) or (nang x)) hoi. hieu van lam thuoc phap sinh te ((cua tre) OR (cua te))*".