Perhaps you should try some spelling variations:
"modified changing aided algorithm" » "modified caging aided algorithm", "modified changing adam algorithm", "modified changing driven algorithm", "modified changing winner algorithm"
"modified one approximation algorithms" » "modified time approximation algorithms", "modified _ approximation algorithms", "modified rough approximations algorithms", "modified male approximation algorithms", "modified near approximation algorithms", "modified orca approximation algorithms"

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

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