Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
danh sai » dung sai, danh bat, danh dau
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty sang » ty xang, ty hang, duy sang
sang ma » tang ma, nang ma, sang tao
hieu ha » hieu hoa, hieu va, hieu ca
xa danh » va danh, dia danh, nam danh
sai cua » dai cua, hai cua, lai cua
ma hoi » mai hoi, xa hoi, ma hoa
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: tu sach ty sang ma hoi. hieu ha ((nam thuc) or (nam thuoc)) xa danh sai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty sang ma hoi. hieu ha ((nam thuc) OR (nam thuoc)) xa danh sai cua te.
• Adding a wildcard symbol may retrieve word variants: tu sach ty sang ma hoi. hieu ha ((nam thuc) or (nam thuoc)) xa danh sai cua te*.