Perhaps you should try some spelling variations:
"modified adaptive optimizer algorithms" » "modified adaptive optimized algorithms", "modified adaptive optimized algorithm", "modified adaptive optimization algorithms", "modified passive optimizer algorithms"
"modified objective allocation algorithm" » "modified objective estimation algorithm", "modified objective evolution algorithm", "modified objective predation algorithm"

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

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