Perhaps you should try some spelling variations:
khoa thuoc » khong thuoc, khoa hoc, nha thuoc
hoc sach » hoc sinh, hoc cac, hoc anh
hieu chi » hieu cac, hieu moi
nhung ro » nhung bo, nhung don, nhung loi
chi cua » chi cuc, khi cua, cuoi cua
ro hon » ro han, bo hon
hon vi » chon vi, don vi, hon ai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ((khoa thuoc) OR (hoa hoc)) hieu chi cua ets : nhung ro hon vi đai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sach ((khoa thuoc) OR (hoa hoc)) hieu chi cua ets : nhung ro hon vi đai".
• Adding a wildcard symbol may retrieve word variants: hoc sach ((khoa thuoc) OR (hoa hoc)) hieu chi cua ets : nhung ro hon vi đai*.