Perhaps you should try some spelling variations:
"modified model solutions algorithm" » "modified model solution algorithm", "modified model evolution algorithm", "modified model evolutionary algorithm", "modified nodal solution algorithm", "modified global solutions algorithm", "modified male solutions algorithm"
"modified parameter approximation algorithms" » "modified parameters 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 model solutions algorithm") or ("modified parameter approximation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified model solutions algorithm") OR ("modified parameter approximation algorithms")).
• Removing quotes may allow a broader search: (( modified model solutions algorithm ) or ( modified parameter approximation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified model solutions algorithm") or ("modified parameter approximation algorithms"))*.