Perhaps you should try some spelling variations:
ngang nhanh » nang thanh, nhan nhanh, nganh thanh
chieu sang » chieu sach, chieu xanh, hieu lang
cong ngang » cong nhan, cong quang, cong lang
doi chieu » doc hieu, doi chi, ho chieu
manh hung » anh huong
dung cong » dung trong
nhanh cau » nhanh cay, thanh chau, nhanh ha
cua dung » cua dang, cua dong, qua dung

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 - ((sinh trung) or (manh hung)) cua dung cong ngang nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - ((sinh trung) OR (manh hung)) cua dung cong ngang nhanh cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - ((sinh trung) or (manh hung)) cua dung cong ngang nhanh cau*.