The first video is from the JAV title:
SMA-578
Actress: Yabuki An [矢吹杏]
Title in Japanese: 即尺精飲好きのトイレ痴女 矢吹杏 (if you want to search up dmm)
Both xvideo links you provided are also part of that JAV title
The secondclip
http://video.fc2.com/en/a/content/20120612gze7SMTR/
Just from that 5 seconds (to which I'm limited to watching), although I can't be very positive on this one
The JAV title is most likely SAMA-542 starring actress Aizawa Arisa [愛沢有紗]