Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
va dinh » van dinh, va kinh, va tinh
cua tre » cua te, cuu tre, cua triet
va lam » van lam, va lap
di cua » dai cua, doi cua, de cua

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 ky lang xa hoi. hieu va lam thuoc ((va hanh) or (va dinh)) di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu va lam thuoc ((va hanh) OR (va dinh)) di cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu va lam thuoc ((va hanh) or (va dinh)) di cua tre*.