Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
hanh dinh » thanh dinh, hinh dinh, anh dinh
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tan phan » toan phan, than phan, van phan
phan dau » phan tu, hang dau

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