Perhaps you should try some spelling variations:
pham chuc » pham duc, pham huu, kham chua
hang hai » hoang hai, hang tai, thanh hai
thu lang » thu hang, thu bang, phu lang
so sach » bo sach, co sach, hoc sach
hai cua » thai cua, dai cua, hoi cua
va hang » van hang, va nang, va lang
chuc va » thuc va, thuc vat
ve pham » vi pham, v pham, ve phan
dai hoi » dai hoc, dai hai, dai moi
hieu ve » hieu va, hieu van
mai hoi » mai khoi, lai hoi, mai doi
so sanh » do sanh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (so sanh)) thu lang ((mai hoi) OR (dai hoi)). hieu ve pham chuc va hang hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (so sanh)) thu lang ((mai hoi) OR (dai hoi)). hieu ve pham chuc va hang hai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) thu lang ((mai hoi) OR (dai hoi)). hieu ve pham chuc va hang hai cua te*".