Perhaps you should try some spelling variations:
nam thuoc » nam thu, cay thuoc, va thuoc
thanh doi » thanh loi, thanh moi, thanh do
nha thuoc » nha nuoc, nhan thuc, nha hoc
va thanh » gia thanh, ban thanh, va tinh
nam thuc » am thuc, nam thu, nam tu
doi cua » dai cua, hoi cua
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
cua tuc » cua duc, cua tu, cua thuoc

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky lang xa hoi. hieu va ((nam thuc) or (((nam thuoc) OR (nha thuoc)))) va thanh doi cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky lang xa hoi. hieu va ((nam thuc) OR (((nam thuoc) OR (nha thuoc)))) va thanh doi cua tuc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky lang xa hoi. hieu va ((nam thuc) or (((nam thuoc) OR (nha thuoc)))) va thanh doi cua tuc".
• Adding a wildcard symbol may retrieve word variants: vu sach ky lang xa hoi. hieu va ((nam thuc) or (((nam thuoc) OR (nha thuoc)))) va thanh doi cua tuc*.