Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"coarse graining method algorithm" » "coarse graining mom algorithm", "coarse grain method algorithm", "coarse grained method algorithm", "coarse graining methods algorithm", "coarse learning method algorithm", "coarse learning methods algorithm"

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: (("coarse graining method algorithm") OR ("modified multiobjective optimization algorithms"))~.
• Removing quotes may allow a broader search: (( coarse graining method algorithm ) or ( modified multiobjective optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("coarse graining method algorithm") or ("modified multiobjective optimization algorithms"))*.