Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
thieu sach » chieu sach, thien hach, hieu cach
thong gian » khong gian, thong giao, chong gian
gian lang » gian dan
lang cong » dang cong, bang cong, hang cong
cong tan » cong tac, cong san, cong thanh
phan lap » phan dau
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: toc thieu sach - thanh thong gian lang cong tan ((phan lap) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thanh thong gian lang cong tan ((phan lap) OR (phan van))*.