Perhaps you should try some spelling variations:
"modified df predictive algorithm" » "modified df predation algorithm", "modified df predators algorithm", "modified _ predictive algorithm", "modified a predictive algorithm", "modified model predictive algorithm", "modified adam predictive algorithm", "modified bi1 predictive algorithm"
"modified objective optimized algorithm" » "modified objective optimal algorithm", "modified objective optimization algorithm", "modified objective optimized algorithms", "modified objective optimizer algorithms"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified df predictive algorithm") or ("modified objective optimized algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified df predictive algorithm") OR ("modified objective optimized algorithm")).
• Removing quotes may allow a broader search: (( modified df predictive algorithm ) or ( modified objective optimized algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified df predictive algorithm") or ("modified objective optimized algorithm"))*.