Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
khanh luan » khanh thuan, doanh luan, hang luan
cong thon » cong thong, nong thon, cong hon
thon quan » thong quan, thong quang, thien quan
van cong » van dong, van phong, phan cong
quan dan » quan doan, quan den, quan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (chieu tinh)) - khanh luan van cong thon quan dan ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu tinh)) - khanh luan van cong thon quan dan ca*.