Perhaps you should try some spelling variations:
"data training algorithms" » "data learning algorithms" (Expand Search), "data mining algorithms" (Expand Search)
"element method algorithm" » "element mould algorithm" (Expand Search), "elements method algorithm" (Expand Search)
"element cnn algorithm" » "element rd algorithm" (Expand Search), "element colony algorithm" (Expand Search), "element cosine algorithm" (Expand Search), "elements cnn algorithm" (Expand Search)

Try widening your search to All Fields.

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