Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
hieu lang » hieu quang, nhieu tang, hieu van
luan phan » luan van, luan hoan
phan cong » thanh cong
cong van » cong vang, cong san, song van
ban can » ban dan, ban hang, ban hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sang) or (hieu lang)) - hanh doanh luan phan cong van ban can~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (hieu lang)) - hanh doanh luan phan cong van ban can*.