Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
duc van » duc va, duc tan, duc manh
duc ban » duc tan, dua ban, duc man
sach ty » sach y, sach thu, xach tay
hieu ve » hieu va, hieu van
sach tu » sach thu, cach tu, sach uu
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: te ((sach ty) or (sach tu)) ang xa hoi. hieu ve cam ((duc ban) OR (duc van)) hanh vai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) ang xa hoi. hieu ve cam ((duc ban) OR (duc van)) hanh vai cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach tu)) ang xa hoi. hieu ve cam ((duc ban) OR (duc van)) hanh vai cua thuoc".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) ang xa hoi. hieu ve cam ((duc ban) OR (duc van)) hanh vai cua thuoc*.