Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
yen lang » den lang, ten lang, yen giang
van hanh » van thanh, ban hanh, van anh
cam tuc » cam xuc, nam thuc, dam thuc
hieu ve » hieu va, hieu van
te sach » toc sach
o lang » hoa lang, hoi lang
cam tu » cam thu, nam tu, dam tu
vi cua » vai cua, di cua

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: te sach ((yen lang) OR (o lang)) xa hoi. hieu ve ((cam tuc) OR (cam tu)) van hanh vi cua thuoc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((yen lang) or (o lang)) xa hoi. hieu ve ((cam tuc) OR (cam tu)) van hanh vi cua thuoc~".
• Adding a wildcard symbol may retrieve word variants: te sach ((yen lang) or (o lang)) xa hoi. hieu ve ((cam tuc) OR (cam tu)) van hanh vi cua thuoc*.