Perhaps you should try some spelling variations:
"data backing algorithm" » "data tracking algorithm" (Expand Search), "data making algorithm" (Expand Search), "data tracking algorithms" (Expand Search)
"movement data algorithm" » "movement data algorithms" (Expand Search), "movement update algorithm" (Expand Search), "movement atlas algorithm" (Expand Search)
"gmm clustering algorithm" » "_ clustering algorithm" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"movement data algorithm\") OR (((\"data backing algorithm\") OR (\"gmm clustering algorithm\"))))~".
• Removing quotes may allow a broader search: (( movement data algorithm ) OR ((( data backing algorithm ) OR ( gmm clustering algorithm ))))~.
• Adding a wildcard symbol may retrieve word variants: (("movement data algorithm") OR ((("data backing algorithm") OR ("gmm clustering algorithm"))))*.