Perhaps you should try some spelling variations:
"element mapping algorithm" » "element making algorithm" (Expand Search), "element mining algorithm" (Expand Search), "element learning algorithm" (Expand Search), "elemental mapping algorithm" (Expand Search), "element modeling algorithm" (Expand Search), "argument mapping algorithm" (Expand Search)
"elements res algorithms" » "elements tree algorithms" (Expand Search), "elements best algorithms" (Expand Search), "elements rl algorithms" (Expand Search), "elements ree algorithms" (Expand Search), "elements mges algorithms" (Expand Search), "elements ices algorithms" (Expand Search)
"elements pass algorithm" » "elements lasso algorithm" (Expand Search), "elements pso algorithm" (Expand Search), "elements rast algorithm" (Expand Search), "elements based algorithm" (Expand Search), "elements mges algorithm" (Expand Search), "elements ppm algorithm" (Expand Search)

Try widening your search to All Fields.

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