Perhaps you should try some spelling variations:
"modified allocation optimized algorithm" » "modified allocation optimization algorithm", "modified allocation optimized algorithms", "modified allocation optimizer algorithms"
"modified positive solution algorithm" » "modified positive evolution algorithm", "modified positive convolution algorithms", "modified positive evolutionary algorithm", "modified passive solution algorithm", "modified adaptive solution algorithm", "modified positive solutions 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 positive solution algorithm") or ("modified allocation optimized algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified positive solution algorithm") OR ("modified allocation optimized algorithm")).
• Removing quotes may allow a broader search: (( modified positive solution algorithm ) or ( modified allocation optimized algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified positive solution algorithm") or ("modified allocation optimized algorithm"))*.