Perhaps you should try some spelling variations:
"modified multiobjective approximation algorithms" » "modified multiobjective optimization algorithms"
"machines learning method algorithm" » "machine learning method algorithm", "active learning method algorithm", "mapping learning method algorithm", "machines learning mom algorithm", "machines learning methods algorithm", "machines graining methods algorithm", "machines learning emotion algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("machines learning method algorithm") or ("modified multiobjective approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("machines learning method algorithm") OR ("modified multiobjective approximation algorithms"))*.
• Removing quotes may allow a broader search: (( machines learning method algorithm ) or ( modified multiobjective approximation algorithms ))*.