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 processing algorithm" » "fold modeling algorithm" (Expand Search), "fold routing algorithm" (Expand Search), "fold tracking algorithm" (Expand Search), "food processing algorithm" (Expand Search), "wood processing algorithm" (Expand Search), "post processing algorithm" (Expand Search)
"element rl algorithms" » "element ml algorithms" (Expand Search), "element rl algorithm" (Expand Search), "element art algorithms" (Expand Search), "element ore algorithms" (Expand Search), "element ree algorithms" (Expand Search), "element _ algorithms" (Expand Search)

Try widening your search to All Fields.

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