Perhaps you should try some spelling variations:
thinh khong » tinh khong, trinh khong, thi khong
thieu sach » chieu sach, thien hach, hieu cach
van phong » van dong, hai phong
phong dan » phong van, thong dan, phong ban
gian van » giang van, gian dan, gian lan
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 - thinh khong gian van phong dan ((phan lap) or (phan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - thinh khong gian van phong dan ((phan lap) OR (phan van))*.