Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc ma » hoc ma, duoc ma
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
vu sach » vu bach, su sach, vu khach
ma hanh » va hanh, da hanh, na hanh
hieu ve » hieu va
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vi cua » vai cua, di cua
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: vu sach ky ((nang xa) or (lang van)) hoi. ((hieu ve) or (hieu van)) nam thuoc ma hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky ((nang xa) OR (lang van)) hoi. ((hieu ve) OR (hieu van)) nam thuoc ma hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: vu sach ky ((nang xa) or (lang van)) hoi. ((hieu ve) or (hieu van)) nam thuoc ma hanh vi cua te*.