Perhaps you should try some spelling variations:
"level modeling algorithm" » "level scheduling algorithm" (Expand Search), "event modeling algorithm" (Expand Search)
"implement cscap algorithm" » "implement cosine algorithm" (Expand Search), "implemented cscap algorithm" (Expand Search), "implementing cscap algorithm" (Expand Search)
"element art algorithms" » "element _ algorithms" (Expand Search), "element rd algorithm" (Expand Search), "elements art algorithms" (Expand Search)

Try widening your search to All Fields.

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