Perhaps you should try some spelling variations:
"image processing algorithm" » "image routing algorithm" (Expand Search), "image tracking algorithm" (Expand Search), "image boosting algorithm" (Expand Search)
"data modeling algorithm" » "data making algorithm" (Expand Search), "data modelling algorithm" (Expand Search), "data models algorithm" (Expand Search)
"element means algorithm" » "element search algorithm" (Expand Search), "element mesh algorithm" (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("image processing algorithm") OR ("data modeling algorithm"))) OR ("element means algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"image processing algorithm\") OR (\"data modeling algorithm\"))) OR (\"element means algorithm\"))".
• Removing quotes may allow a broader search: (((( image processing algorithm ) OR ( data modeling algorithm ))) OR ( element means algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("image processing algorithm") OR ("data modeling algorithm"))) OR ("element means algorithm"))*.