Perhaps you should try some spelling variations:
nha thuoc » nha nuoc, nhan thuc, nha hoc
ban thanh » ban hanh, ban hang
nam thuoc » nam thuc, nam thu, cay thuoc
lam duoc » nam duoc, luat duoc, lam thuoc
ly dung » ly dong, xay dung, ly khung
dung ha » dung va, dung he, dung khoa
san cua » sang cua, ban cua, dan cua
thi van » thi lan, thi hanh, thi nang
so sac » so sach, so dac
sac ly » sac ky
ha hoi » hoa hoi, ha noi, xa hoi
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: so sac ly dung ha hoi. thi van ((lam duoc) OR (((nam thuoc) OR (nha thuoc)))) ban thanh san cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ly dung ha hoi. thi van ((lam duoc) or (((nam thuoc) OR (nha thuoc)))) ban thanh san cua te~".
• Adding a wildcard symbol may retrieve word variants: so sac ly dung ha hoi. thi van ((lam duoc) or (((nam thuoc) OR (nha thuoc)))) ban thanh san cua te*.