Perhaps you should try some spelling variations:
"modified based solution algorithm" » "modified based evolution algorithm", "modified based convolution algorithms", "modified based evolutionary algorithm", "modified male solution algorithm", "modified based solutions algorithm", "modified water solution algorithm", "modified based evaluation algorithm"
"modified average approximation algorithms" » "modified coverage approximation algorithms"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified average approximation algorithms\") OR (\"modified based solution algorithm\"))~".
• Removing quotes may allow a broader search: (( modified average approximation algorithms ) OR ( modified based solution algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified average approximation algorithms") OR ("modified based solution algorithm"))*.