Perhaps you should try some spelling variations:
"query processing algorithm" » "query processing algorithms" (Expand Search), "text processing algorithm" (Expand Search)
"relevant data algorithms" » "relevant jaya algorithm" (Expand Search)
"element cnn algorithm" » "element rd algorithm" (Expand Search), "element colony algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements cnn algorithm" (Expand Search)

Try widening your search to All Fields.

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