Perhaps you should try some spelling variations:
"modified allocation optimization algorithms" » "modified allocation optimisation algorithm", "modified allocation estimation algorithms", "modified allocation estimation algorithm", "modified location optimization algorithms"
"modified passive optimized algorithm" » "modified passive optimized algorithms", "modified passive optimizer algorithms", "modified adaptive optimized algorithm"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified passive optimized algorithm\") OR (\"modified allocation optimization algorithms\"))~".
• Removing quotes may allow a broader search: (( modified passive optimized algorithm ) OR ( modified allocation optimization algorithms ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified passive optimized algorithm") OR ("modified allocation optimization algorithms"))*.