Perhaps you should try some spelling variations:
"modified dorca estimation algorithms" » "modified dorca estimation algorithm", "modified dorca optimization algorithms", "modified dorca optimisation algorithm", "modified pose estimation algorithms", "modified orca estimation algorithms"
"modified notion approximation algorithms" » "modified network approximation algorithms", "modified time approximation algorithms", "modified one 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 dorca estimation algorithms") OR ("modified notion approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified dorca estimation algorithms ) or ( modified notion approximation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified dorca estimation algorithms") or ("modified notion approximation algorithms"))*.