Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
lang van » dang van, tang van, hoang van
van hanh » van thanh, ban hanh, van anh
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach tu » sach thu, cach tu, sach ty
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, vuc van
tai cua » thai cua, tai cuc, tri cua
va cam » va cham, va cac, va cao

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 tu ((xang xa) or (lang van)) hoi. hieu va cam xuc van hanh tai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu ((xang xa) OR (lang van)) hoi. hieu va cam xuc van hanh tai cua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach tu ((xang xa) or (lang van)) hoi. hieu va cam xuc van hanh tai cua thuoc*.