Perhaps you should try some spelling variations:
"image processing algorithm" » "image modeling algorithm" (Expand Search), "image routing algorithm" (Expand Search), "image tracking algorithm" (Expand Search)
"fold using algorithms" » "fold pacing algorithms" (Expand Search), "fold nine algorithms" (Expand Search), "fold sorting algorithms" (Expand Search), "found using algorithms" (Expand Search), "solved using algorithms" (Expand Search), "pooled using algorithms" (Expand Search)
"element method algorithm" » "element network algorithm" (Expand Search), "element means algorithm" (Expand Search), "element mean algorithm" (Expand Search)

Try widening your search to All Fields.

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