Perhaps you should try some spelling variations:
"data processing algorithm" » "data processing algorithms" (Expand Search)
"image scheduling algorithm" » "task scheduling algorithm" (Expand Search)
"element data algorithm" » "element jaya algorithm" (Expand Search), "element deer algorithm" (Expand Search), "elements data 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 scheduling algorithm") OR ("data processing algorithm"))) OR ("element data algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"image scheduling algorithm\") OR (\"data processing algorithm\"))) OR (\"element data algorithm\"))".
• Removing quotes may allow a broader search: (((( image scheduling algorithm ) OR ( data processing algorithm ))) OR ( element data algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("image scheduling algorithm") OR ("data processing algorithm"))) OR ("element data algorithm"))*.