Perhaps you should try some spelling variations:
phuong dong » phuong dung, phuong hoang, chuong duong
luan phuong » lan phuong, quang phuong, doan phuong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
hanh dung » thanh dung, anh dung, hanh dong
hanh cham » thanh pham, hanh lam, hanh nam
dong vat » dong va, dong von, dong ha
vat hanh » vat thanh, van hanh, va hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu quang)) - hanh dung luan phuong dong vat hanh cham~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu quang)) - hanh dung luan phuong dong vat hanh cham*.