Perhaps you should try some spelling variations:
"element sorting algorithms" » "element routing algorithm" (Expand Search), "element learning algorithms" (Expand Search), "element strain algorithms" (Expand Search), "element bonding algorithms" (Expand Search), "element modeling algorithms" (Expand Search)
"element based algorithms" » "element based algorithm" (Expand Search), "engagement based algorithms" (Expand Search)
"element study algorithm" » "element wsindy algorithm" (Expand Search), "element td3 algorithm" (Expand Search), "element seu algorithm" (Expand Search), "relevant study algorithm" (Expand Search), "present study algorithm" (Expand Search), "recent study 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 sorting algorithms") OR ((("element based algorithms") OR ("element study algorithm"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"element sorting algorithms\") OR (((\"element based algorithms\") OR (\"element study algorithm\"))))".
• Removing quotes may allow a broader search: (( element sorting algorithms ) OR ((( element based algorithms ) OR ( element study algorithm )))).
• Adding a wildcard symbol may retrieve word variants: (("element sorting algorithms") OR ((("element based algorithms") OR ("element study algorithm"))))*.