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

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