Perhaps you should try some spelling variations:
cua thuoc » nha thuoc, cay thuoc, cua nuoc
hanh vai » hanh vi, hanh va, hanh tai
ve pham » vi pham, v pham, ve phan
vai cua » dai cua, hai cua, lai cua
duc van » duc va, duc tan, duc manh
duc ban » duc tan, dua ban, duc man
te sach » toc sach
sach ty » sach y, sach tu, sach thu
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
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 ((ang xa) or (lang xa)) hoi. hieu ve pham ((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 ((ang xa) OR (lang xa)) hoi. hieu ve pham ((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 ((ang xa) or (lang xa)) hoi. hieu ve pham ((duc ban) OR (duc van)) hanh vai cua thuoc".
• Adding a wildcard symbol may retrieve word variants: te sach ty ((ang xa) or (lang xa)) hoi. hieu ve pham ((duc ban) OR (duc van)) hanh vai cua thuoc*.