Perhaps you should try some spelling variations:
"modified based continuation algorithms" » "modified based convolution algorithms", "modified based estimation algorithms", "modified based optimization algorithms", "modified male continuation algorithms"
"modified coverage approximation algorithms" » "modified average approximation algorithms"

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: (("modified coverage approximation algorithms") OR ("modified based continuation algorithms"))~.
• Removing quotes may allow a broader search: (( modified coverage approximation algorithms ) or ( modified based continuation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified coverage approximation algorithms") or ("modified based continuation algorithms"))*.