Perhaps you should try some spelling variations:
"modified changing optimisation algorithm" » "modified changing optimization algorithms", "modified changing estimation algorithm", "modified changing estimation algorithms", "modified staffing optimization algorithm", "modified caging optimisation algorithm"
"modified objective allocation algorithms" » "modified objective estimation algorithms", "modified objective approximation algorithms"

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 objective allocation algorithms\") OR (\"modified changing optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( modified objective allocation algorithms ) OR ( modified changing optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("modified objective allocation algorithms") OR ("modified changing optimisation algorithm"))*.