Perhaps you should try some spelling variations:
"modified objective optimisation algorithmsss" » "modified objective optimisation algorithm", "modified objective optimization algorithms", "modified objective estimation algorithms", "modified objective optimization algorithmsss", "modified multiobjective optimization algorithmsss"
"modified parameter estimation algorithm" » "modified parameter estimates algorithm", "modified parameter optimization algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified parameter estimation algorithm") or ("modified objective optimisation algorithmsss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified parameter estimation algorithm") OR ("modified objective optimisation algorithmsss"))*.
• Removing quotes may allow a broader search: (( modified parameter estimation algorithm ) or ( modified objective optimisation algorithmsss ))*.