Perhaps you should try some spelling variations:
phuong phuong » thuong phuong, nhung phuong, truong phuong
luan phuong » lan phuong, quang phuong, doan phuong
chieu sang » chieu sach, chieu xanh, hieu lang
chieu tinh » trieu tinh, lieu tinh, chau tinh
phuong thi » phung thi, huong thi, phong thi
bang luan » tang luan, hang luan, dung luan
thanh cao » thanh ca, thanh cac, thanh thao
anh bang » anh hoang, anh quang, tinh bang

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)) - anh bang luan phuong phuong thi thanh cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (chieu tinh)) - anh bang luan phuong phuong thi thanh cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (chieu tinh)) - anh bang luan phuong phuong thi thanh cao*.