Perhaps you should try some spelling variations:
dang phuong » bang phuong, dung phuong, dan phuong
phuong danh » phuong anh, phuong dinh, phuong hanh
chieu sang » chieu sach, chieu xanh, hieu lang
danh toan » manh toan, anh toan, dan toan
ho chieu » theo chieu, hoc thieu, doi chieu
anh tang » anh bang, anh dang, anh nang
cua dang » cua cong, cua ban
toan cau » toan cao, toan ban, toan tap

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 - ((anh tang) or (nhanh quang)) cua dang phuong danh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((anh tang) OR (nhanh quang)) cua dang phuong danh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((anh tang) or (nhanh quang)) cua dang phuong danh toan cau*.