Perhaps you should try some spelling variations:
ldang xay » lang xa, luan xay, luong xay
cua thuoc » nha thuoc, cay thuoc, cua nuoc
dang xay » dang van, van xay
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
duc ban » duc van, dua ban, duc man
te sach » toc sach
sach ty » sach y, sach tu, sach thu
hieu ve » hieu va, hieu van
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 ty ((dang xay) or (ldang xay)) hoi. hieu ve cam ((duc ban) or (duc tan)) hanh vai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((dang xay) OR (ldang xay)) hoi. hieu ve cam ((duc ban) OR (duc tan)) hanh vai cua thuoc.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((dang xay) or (ldang xay)) hoi. hieu ve cam ((duc ban) or (duc tan)) hanh vai cua thuoc*.