Perhaps you should try some spelling variations:
"modified objective optimization algorithm" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified objective estimation algorithm", "modified multiobjective optimization algorithm"
"modified pulse estimation algorithms" » "modified pulse estimation algorithm", "modified pulse optimization algorithms", "modified pulse optimisation algorithm", "modified pulses estimation algorithms", "modified pose estimation algorithms", "modified sphere estimation algorithms", "modified male estimation algorithms", "modified passive 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 pulse estimation algorithms") or ("modified objective optimization algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified pulse estimation algorithms") OR ("modified objective optimization algorithm")).
• Removing quotes may allow a broader search: (( modified pulse estimation algorithms ) or ( modified objective optimization algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified pulse estimation algorithms") or ("modified objective optimization algorithm"))*.