Perhaps you should try some spelling variations:
"modified allocation optimization algorithm" » "modified allocation optimization algorithms", "modified allocation estimation algorithm", "modified allocation estimation algorithms", "modified location optimization algorithm"
"modified charging optimisation algorithm" » "modified charging optimization algorithms", "modified charging estimation algorithm", "modified charging estimation algorithms", "modified staffing optimization algorithm", "modified caging optimisation algorithm", "modified carbon optimisation 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 allocation optimization algorithm\") OR (\"modified charging optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified allocation optimization algorithm ) OR ( modified charging optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified allocation optimization algorithm") OR ("modified charging optimisation algorithm"))*.