Perhaps you should try some spelling variations:
"modified multiobjective optimizer algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective optimized algorithms", "modified multiobjective optimized algorithm"
"active learning solution algorithm" » "active learning evolution algorithm", "active learning convolution algorithms", "active learning evolutionary algorithm", "active learning convolution algorithm", "active learning emotion algorithm", "machine learning solution algorithm"

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

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