Perhaps you should try some spelling variations:
sinh khoa » sinh hoc, sinh hoat, anh khoa
hoc thieu » toc thieu, hoc hien
thieu chi » thieu nhi, hieu chi, tieu chi
nhung bo » nhung bi, nhung bai, nhung don
chi cua » chi cuc, khi cua, cuoi cua
bo o » bo ho, bo oc, bo so
o vi » co vi, so vi, o va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sinh khoa) or (sach nha)) hoc thieu chi cua ets : nhung bo o vi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sinh khoa) OR (sach nha)) hoc thieu chi cua ets : nhung bo o vi đai.
• Adding a wildcard symbol may retrieve word variants: tu ((sinh khoa) or (sach nha)) hoc thieu chi cua ets : nhung bo o vi đai*.