Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
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
mang xa » mang may, dang xay, mang cua
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, vuc van
tai cua » thai cua, tai cuc, tri cua
ve cam » ve cham, ve cac, va cam

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