Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
nam thuc » am thuc, nam thu, nam tu
vu sach » vu bach, su sach, vu khach
nang xa » nang x, nang ma, mang xa
va hanh » van hanh, va thanh, va danh
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
vi cua » vai cua, di cua
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: vu sach ky ((nang xa) OR (lang xa)) hoi. hieu ve ((nam thuoc) OR (nam thuc)) va hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky ((nang xa) or (lang xa)) hoi. hieu ve ((nam thuoc) OR (nam thuc)) va hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) or (lang xa)) hoi. hieu ve ((nam thuoc) OR (nam thuc)) va hanh vi cua te*.