Perhaps you should try some spelling variations:
"modified objective optimization algorithms" » "modified objective optimisation algorithm", "modified objective estimation algorithms", "modified objective estimation algorithm", "modified multiobjective optimization algorithms"
"powder using methods algorithm" » "powder nursing methods algorithm", "powder making methods algorithm", "powder counting methods algorithm", "code using methods algorithm", "boiler using methods algorithm", "model using methods algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified objective optimization algorithms\") OR (\"powder using methods algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective optimization algorithms ) OR ( powder using methods algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimization algorithms") OR ("powder using methods algorithm"))*.