Perhaps you should try some spelling variations:
sach khoa » bach khoa, sach nha, sinh khoa
anh khoa » doanh khoa, hang khoa
toc hieu » toc thieu, doc hieu, hoc thieu
hieu khi » hieu chi, thieu nhi, khien khi
nhung bi » nhung gi
khi cua » chi cua, thai cua
ho voi » hop voi, pho voi, hoc voi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((sach khoa) OR (anh khoa)) toc hieu khi cua ets : ((nhung bi) or (nhung bai)) ho voi đai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sach khoa) OR (anh khoa)) toc hieu khi cua ets : ((nhung bi) OR (nhung bai)) ho voi đai*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((sach khoa) OR (anh khoa)) toc hieu khi cua ets : ((nhung bi) or (nhung bai)) ho voi đai*".