Perhaps you should try some spelling variations:
"modified allocation approximation algorithms" » "modified allocation optimization algorithms"
"modified changing optimized algorithm" » "modified changing optimized algorithms", "modified changing optimizer algorithms", "modified choosing optimizer algorithm", "modified caging optimized algorithm"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified changing optimized algorithm") OR ("modified allocation approximation algorithms"))~.
• Removing quotes may allow a broader search: (( modified changing optimized algorithm ) or ( modified allocation approximation algorithms ))~.
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