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

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: (("modified caging optimisation algorithm") or ("modified objective allocation algorithmsss"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging optimisation algorithm") OR ("modified objective allocation algorithmsss")).
• Removing quotes may allow a broader search: (( modified caging optimisation algorithm ) or ( modified objective allocation algorithmsss )).
• Adding a wildcard symbol may retrieve word variants: (("modified caging optimisation algorithm") or ("modified objective allocation algorithmsss"))*.