Perhaps you should try some spelling variations:
"elemental sampling algorithm" » "elemental mapping algorithm" (Expand Search), "elemental coupling algorithm" (Expand Search), "elemental making algorithm" (Expand Search), "elemental modeling algorithm" (Expand Search), "elemental mining algorithm" (Expand Search)
"elements pso algorithm" » "elements lasso algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements ii algorithm" (Expand Search), "elements ppm algorithm" (Expand Search), "elements upon algorithm" (Expand Search)
"elements uce algorithm" » "elements each algorithm" (Expand Search), "elements cc3d algorithm" (Expand Search), "elements ipca algorithm" (Expand Search), "elements ices algorithm" (Expand Search), "elements fe algorithm" (Expand Search), "elements ree 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 pso algorithm") OR ("elements uce algorithm"))) OR ("elemental sampling algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements pso algorithm\") OR (\"elements uce algorithm\"))) OR (\"elemental sampling algorithm\"))".
• Removing quotes may allow a broader search: (((( elements pso algorithm ) OR ( elements uce algorithm ))) OR ( elemental sampling algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements pso algorithm") OR ("elements uce algorithm"))) OR ("elemental sampling algorithm"))*.