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

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