Perhaps you should try some spelling variations:
thinh khong » tinh khong, trinh khong, thi khong
hieu sach » chieu sach, hieu cach, dien sach
gian lang » gian dan
lang cong » dang cong, bang cong, hang cong
doc hieu » toc thieu, hoc thieu, hoc hien
cong dan » cong san, cong tan, huong dan
phan lap » phan dau

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 sach - thinh khong gian lang cong dan ((phan lap) or (pham van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu sach - thinh khong gian lang cong dan ((phan lap) OR (pham van))*.