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

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("modified quadratic optimization algorithm") or ("modified changing optimized algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified quadratic optimization algorithm") OR ("modified changing optimized algorithm")).
• Removing quotes may allow a broader search: (( modified quadratic optimization algorithm ) or ( modified changing optimized algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified quadratic optimization algorithm") or ("modified changing optimized algorithm"))*.