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