Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
khoa thuoc » khong thuoc, khoa hoc, nha thuoc
hieu nghi » thieu nhi, huu nghi, hieu chi
hoc sach » hoc sinh, hoc cac, hoc anh
khoa toc » khoa hoc, hoa toc, khoa quoc
nghi cua » nghia cua, nghe cua, ngai cua
nhung bo » nhung bi, nhung bai, nhung don
bo uoc » bo duoc, bo quoc, mo uoc
uoc vi » hoc vi, doc vi, uoc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) OR (hoc sach)) ((khoa toc) or (khoa thuoc)) hieu nghi cua ets : nhung bo uoc vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) ((khoa toc) OR (khoa thuoc)) hieu nghi cua ets : nhung bo uoc vi đai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) ((khoa toc) or (khoa thuoc)) hieu nghi cua ets : nhung bo uoc vi đai".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) ((khoa toc) or (khoa thuoc)) hieu nghi cua ets : nhung bo uoc vi đai*.