Perhaps you should try some spelling variations:
"modified location optimisation algorithm" » "modified location optimization algorithms", "modified location estimation algorithm", "modified location estimation algorithms", "modified allocation optimization algorithm", "modified carbon optimisation algorithm"
"machines using method algorithm" » "machines using mom algorithm", "machinery using method algorithm", "machines nursing methods algorithm", "machines focusing method algorithm", "machines using metal 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: "((\"machines using method algorithm\") OR (\"modified location optimisation algorithm\"))~".
• Removing quotes may allow a broader search: (( machines using method algorithm ) OR ( modified location optimisation algorithm ))~.
• Adding a wildcard symbol may retrieve word variants: (("machines using method algorithm") OR ("modified location optimisation algorithm"))*.