Perhaps you should try some spelling variations:
"data modelling algorithm" » "data modeling algorithm" (Expand Search), "data processing algorithm" (Expand Search)
"fold using algorithm" » "fold using algorithms" (Expand Search), "fold routing algorithm" (Expand Search), "fold fusion algorithm" (Expand Search), "found using algorithm" (Expand Search), "solved using algorithm" (Expand Search), "pooled using algorithm" (Expand Search)
"element based algorithm" » "engagement based algorithm" (Expand Search)

Try widening your search to All Fields.

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