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

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