Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
ban hanh » ban hang
vai cua » dai cua, hai cua, lai cua
duc ban » duc tan, duc van, dua ban
cam duc » cam xuc, cao duc, pham duc
hieu ve » hieu va, hieu van
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
ve cam » ve cham, ve cac, va cam
ang xa » mang xa, dang xay, hoang xa

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 thu)) ((ang xa) or (lang xa)) hoi. hieu ve cam duc ban hanh vai cua thuoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) ((ang xa) OR (lang xa)) hoi. hieu ve cam duc ban hanh vai cua thuoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) OR (sach thu)) ((ang xa) or (lang xa)) hoi. hieu ve cam duc ban hanh vai cua thuoc".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) OR (sach thu)) ((ang xa) or (lang xa)) hoi. hieu ve cam duc ban hanh vai cua thuoc*.