Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
luan phuong » lan phuong, quang phuong, doan phuong
phuong dong » phuong dung, phuong hoang, chuong duong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh dung » thanh dung, anh dung, hanh dong
vat thanh » dat thanh, gat thanh, tat thanh
thanh chu » thanh chau, thanh cha, thanh thu
dong vat » dong va, dong von, dong ha

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 (thieu quang)) - hanh dung luan phuong dong vat thanh chu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (thieu quang)) - hanh dung luan phuong dong vat thanh chu*.