Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » thong cong, hang cong, nhung don
canh tinh » hanh tinh, manh tinh, canh tranh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
dan phan » doan phan, dan chan, van phan
tinh va » tich va, trinh van, trinh vat

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 - canh tinh va ((nhung cong) or (dung cong)) dan phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - canh tinh va ((nhung cong) OR (dung cong)) dan phan tu.
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - canh tinh va ((nhung cong) or (dung cong)) dan phan tu*.