Perhaps you should try some spelling variations:
"modified parameters optimization algorithm" » "modified parameter optimization algorithm", "modified parameter estimation algorithm", "modified parameters optimization algorithms", "modified parameters optimisation algorithm", "modified parameters estimation algorithm"
"modified location estimation algorithmss" » "modified location estimation algorithms", "modified location estimation algorithm", "modified location optimization algorithms", "modified motion estimation algorithmss", "modified carbon estimation algorithmss"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified location estimation algorithmss") OR ("modified parameters optimization algorithm"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified location estimation algorithmss\") OR (\"modified parameters optimization algorithm\"))".
• Removing quotes may allow a broader search: (( modified location estimation algorithmss ) OR ( modified parameters optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified location estimation algorithmss") OR ("modified parameters optimization algorithm"))*.