Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
van hanh » van thanh, ban hanh, van anh
chat huu » pham huu
chat xuc » cam xuc, chao xu, chat cua
hanh di » hanh vi, hanh de, hang di
te sach » toc sach
hieu ve » hieu va, hieu van
ma hoi » mai hoi, xa hoi, ma hoa
_ sang » _ san
v sang » va sang, ve sang, van sang
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((v sang) or (_ sang)) ma hoi. hieu ve ((chat xuc) or (chat huu)) van hanh di cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v sang) OR (_ sang)) ma hoi. hieu ve ((chat xuc) OR (chat huu)) van hanh di cua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach ((v sang) or (_ sang)) ma hoi. hieu ve ((chat xuc) or (chat huu)) van hanh di cua thuoc*.