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"
"core using method algorithm" » "core using mom algorithm", "core nursing methods algorithm", "core focusing method algorithm", "core using metal algorithm", "code using method algorithm", "care nursing method algorithm"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("core using method algorithm") or ("modified location optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("core using method algorithm") OR ("modified location optimization algorithms")).
• Removing quotes may allow a broader search: (( core using method algorithm ) or ( modified location optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("core using method algorithm") or ("modified location optimization algorithms"))*.