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