Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
vat hanh » vat thanh, van hanh, va hanh
te sach » toc sach
hanh de » hanh ve, hanh kem
cua tuc » cua duc, cua tu, cua thuoc
sach tu » sach thu, cach tu, sach ty
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
tu nang » tru nang, tu nong, tu nano
cua te » cua 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 tu nang xa hoi. hieu ve ((nam thuc) OR (nam thuoc)) vat hanh de ((cua te) OR (cua tuc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nang xa hoi. hieu ve ((nam thuc) OR (nam thuoc)) vat hanh de ((cua te) or (cua tuc))~".
• Adding a wildcard symbol may retrieve word variants: te sach tu nang xa hoi. hieu ve ((nam thuc) OR (nam thuoc)) vat hanh de ((cua te) or (cua tuc))*.