Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
khanh luan » khanh thuan, doanh luan, hang luan
dong thong » thong thong, nong thon, dong thanh
thong chan » thong chuan, thong phan, thong nhan
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 sach)) - khanh luan van dong thong chan doan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu sach)) - khanh luan van dong thong chan doan cap*.