Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hanh tai » thanh tai, hang tai, han tai
toc sach » hoc sach, doc sach, thuoc sach
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, sach thu
luc van » luoc van, luu van, duc van
xuc ban » duc ban, cuc ban, quoc ban
xang xa » lang xa, mang xa, dang xay
tai cua » thai cua, tai cuc, tri cua
ang xa » lang xa, mang xa, dang xay
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: toc sach ty ((xang xa) OR (ang xa)) hoi. hieu ve cam ((luc van) or (xuc ban)) hanh tai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty ((xang xa) OR (ang xa)) hoi. hieu ve cam ((luc van) OR (xuc ban)) hanh tai cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty ((xang xa) OR (ang xa)) hoi. hieu ve cam ((luc van) or (xuc ban)) hanh tai cua thuoc".
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((xang xa) OR (ang xa)) hoi. hieu ve cam ((luc van) or (xuc ban)) hanh tai cua thuoc*.