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