Perhaps you should try some spelling variations:
"data processing algorithm" » "data modeling algorithm" (Expand Search), "data routing algorithm" (Expand Search), "data tracking algorithm" (Expand Search), "image processing algorithm" (Expand Search)
"image 2_using algorithm" » "image routing algorithm" (Expand Search), "image using algorithms" (Expand Search), "image twisting algorithm" (Expand Search), "image 1_using algorithm" (Expand Search), "image 2_single algorithm" (Expand Search), "image 2_long 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 2_using algorithm") OR ("data processing algorithm"))) OR ("element means algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"image 2_using algorithm\") OR (\"data processing algorithm\"))) OR (\"element means algorithm\"))".
• Removing quotes may allow a broader search: (((( image 2_using algorithm ) OR ( data processing algorithm ))) OR ( element means algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("image 2_using algorithm") OR ("data processing algorithm"))) OR ("element means algorithm"))*.