Perhaps you should try some spelling variations:
"element mining algorithm" » "element finding algorithm" (Expand Search), "element making algorithm" (Expand Search), "element training algorithms" (Expand Search), "element mapping algorithm" (Expand Search), "element bonding algorithm" (Expand Search), "element modeling algorithm" (Expand Search)
"element cnn algorithm" » "element mean algorithm" (Expand Search), "element _ algorithm" (Expand Search), "element ii algorithm" (Expand Search)
"elements lr algorithm" » "elements erf algorithm" (Expand Search), "elements mlm algorithm" (Expand Search), "elements _ algorithm" (Expand Search), "elements zr algorithm" (Expand Search), "elements b 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 lr algorithm") OR ("element cnn algorithm"))) OR ("element mining algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"elements lr algorithm\") OR (\"element cnn algorithm\"))) OR (\"element mining algorithm\"))".
• Removing quotes may allow a broader search: (((( elements lr algorithm ) OR ( element cnn algorithm ))) OR ( element mining algorithm )).
• Adding a wildcard symbol may retrieve word variants: (((("elements lr algorithm") OR ("element cnn algorithm"))) OR ("element mining algorithm"))*.