Perhaps you should try some spelling variations:
"modified objective optimizer algorithms" » "modified objective optimized algorithms", "modified objective optimized algorithm", "modified objective optimization algorithms", "modified objective optimal algorithms"
"active learning method algorithm" » "active learning mom algorithm", "machine learning method algorithm", "active learning methods algorithm", "active graining methods algorithm", "active learning emotion algorithm"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("active learning method algorithm") OR ("modified objective optimizer algorithms"))~.
• Removing quotes may allow a broader search: (( active learning method algorithm ) or ( modified objective optimizer algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("active learning method algorithm") or ("modified objective optimizer algorithms"))*.