Perhaps you should try some spelling variations:
"modified multiobjective estimation algorithms" » "modified multiobjective optimization algorithms", "modified multiobjective estimation algorithm", "modified multiobjective optimisation algorithm"
"modified caging estimation algorithmsss" » "modified caging estimation algorithm", "modified caging estimation algorithmss", "modified caging optimization algorithmsss", "modified caging optimisation algorithmss", "modified lighting estimation algorithmsss"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging estimation algorithmsss") OR ("modified multiobjective estimation algorithms"))~.
• Removing quotes may allow a broader search: (( modified caging estimation algorithmsss ) or ( modified multiobjective estimation algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified caging estimation algorithmsss") or ("modified multiobjective estimation algorithms"))*.