Perhaps you should try some spelling variations:
thanh gian » thanh giang, thach giang, thanh san
thang dang » thang long, phan dang, nhan dang
dan thang » danh thang, van thang, dai thang
doc hieu » hoc thieu, hoc hien
gian dan » gian lang
dang van » hoang van, hang va
van tho » van thao, van thu, van thi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sach - thanh gian dan thang dang van tho ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - thanh gian dan thang dang van tho ca*.