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
dong thong » thong thong, nong thon, dong thanh
quan doan » quan hoang, chuan doan, chan doan
doan cap » doanh cao, dan ca, toan cao

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 dong thong quan doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu tinh)) - khanh luan van dong thong quan doan cap*.