Perhaps you should try some spelling variations:
thinh khong » tinh khong, trinh khong, thi khong
chieu sang » chieu sach, chieu xanh, hieu lang
doc chieu » doc hieu, doi chieu, toc thieu
gian lang » gian dan
lang cong » dang cong, bang cong, hang cong
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 chieu sang - 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 chieu sang - thinh khong gian lang cong dan ((phan lap) OR (pham van))*.