Perhaps you should try some spelling variations:
"elements mining algorithm" » "elements learning algorithm" (Expand Search), "elements means algorithm" (Expand Search), "elements during algorithm" (Expand Search)
"element five algorithms" » "element four algorithms" (Expand Search), "element based algorithms" (Expand Search), "element three algorithms" (Expand Search), "element fbe algorithms" (Expand Search), "element citre algorithms" (Expand Search), "element te algorithms" (Expand Search)
"element mesh algorithm" » "element best algorithm" (Expand Search), "element mean algorithm" (Expand Search), "element means algorithm" (Expand Search), "element method 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 mesh algorithm") OR ("element five algorithms"))) OR ("elements mining algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"element mesh algorithm\") OR (\"element five algorithms\"))) OR (\"elements mining algorithm\"))".
• Removing quotes may allow a broader search: (((( element mesh algorithm ) OR ( element five algorithms ))) OR ( elements mining algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("element mesh algorithm") OR ("element five algorithms"))) OR ("elements mining algorithm"))*.