Perhaps you should try some spelling variations:
"element mining algorithm" » "element cosine algorithm" (Expand Search), "element minin_ algorithms" (Expand Search), "element mininrd algorithm" (Expand Search)
"present data algorithm" » "present jaya algorithm" (Expand Search), "present deer algorithm" (Expand Search)
"element g algorithm" » "element _ algorithms" (Expand Search), "element rd algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "clement k algorithm" (Expand Search)

Try widening your search to All Fields.

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