Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dung cong » dung trong
tinh cua » trinh cua, sinh cua, tinh chat
tan phan » toan phan, than phan, van phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sang - hanh tinh cua ((nhung cong) OR (dung cong)) tan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - hanh tinh cua ((nhung cong) OR (dung cong)) tan phan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh tinh cua ((nhung cong) OR (dung cong)) tan phan cau*.