Perhaps you should try some spelling variations:
"modified quadratic optimization algorithms" » "modified quadratic optimisation algorithm", "modified quadratic estimation algorithms", "modified quadratic estimation algorithm", "modified static optimization algorithms"
"modified objective optimized algorithms" » "modified objective optimized algorithm", "modified objective optimizer algorithms", "modified objective optimal algorithms", "modified objective optimization algorithms"

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 objective optimized algorithms") OR ("modified quadratic optimization algorithms"))~.
• Removing quotes may allow a broader search: (( modified objective optimized algorithms ) or ( modified quadratic optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective optimized algorithms") or ("modified quadratic optimization algorithms"))*.