Perhaps you should try some spelling variations:
"modified location optimization algorithms" » "modified location optimisation algorithm", "modified location estimation algorithms", "modified location estimation algorithm", "modified allocation optimization algorithms", "modified static optimization algorithms", "modified carbon optimization algorithms"
"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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("machines using method algorithm") OR ("modified location optimization algorithms"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"machines using method algorithm\") OR (\"modified location optimization algorithms\"))".
• Removing quotes may allow a broader search: (( machines using method algorithm ) OR ( modified location optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("machines using method algorithm") OR ("modified location optimization algorithms"))*.