Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh hinh » hanh chinh, hanh tinh, hanh dinh
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
hinh cua » chinh cua, sinh cua, tinh cua
dan toan » van toan, dan than, manh toan
van than » van thanh, van thang, van tuan

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 hinh cua nhung cong ((dan toan) or (van than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - hanh hinh cua nhung cong ((dan toan) OR (van than)) ban*.