Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
thang gian » thanh gian, thanh giang, thang gieng
doi chieu » doc hieu, doi chi, mot chieu
cong than » cong thanh, cong thang, cong tan
than phan » thanh phan, toan phan, thanh pham
gian dan » gian lang
dan cong » dang cong, van cong, dan dong
phan van » pham van, thanh van, luan van

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

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