Perhaps you should try some spelling variations:
"modified allocation optimized algorithms" » "modified allocation optimization algorithms", "modified allocation optimized algorithm", "modified allocation optimizer algorithms"
"modified learning predation algorithm" » "modified learning predators algorithm", "modified learning estimation algorithm", "modified learning prediction algorithm", "modified learning emotion algorithm", "mobile learning predation algorithm", "modified caging predation 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 learning predation algorithm") or ("modified allocation optimized algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified learning predation algorithm") OR ("modified allocation optimized algorithms")).
• Removing quotes may allow a broader search: (( modified learning predation algorithm ) or ( modified allocation optimized algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified learning predation algorithm") or ("modified allocation optimized algorithms"))*.