Perhaps you should try some spelling variations:
"modified passive estimation algorithmssss" » "modified passive estimation algorithms", "modified passive estimation algorithm", "modified pose estimation algorithmssss", "modified adaptive estimation algorithmssss"
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective estimation 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 objective optimisation algorithm") OR ("modified passive estimation algorithmssss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimisation algorithm\") OR (\"modified passive estimation algorithmssss\"))".
• Removing quotes may allow a broader search: (( modified objective optimisation algorithm ) OR ( modified passive estimation algorithmssss )).
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimisation algorithm") OR ("modified passive estimation algorithmssss"))*.