Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
ban thanh » ban hanh, ban hang
thien van » thi van
lam duoc » nam duoc, luat duoc, lam thuoc
san cua » sang cua, ban cua, dan cua
dung ha » dung va, dung he, dung khoa
sac ky » sai ky
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 ky) OR (cac ky)) dung ha noi. thien van ((lam duoc) OR (nam thuoc)) ban thanh san cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sac ky) OR (cac ky)) dung ha noi. thien van ((lam duoc) or (nam thuoc)) ban thanh san cua te~".
• Adding a wildcard symbol may retrieve word variants: so ((sac ky) OR (cac ky)) dung ha noi. thien van ((lam duoc) or (nam thuoc)) ban thanh san cua te*.