Perhaps you should try some spelling variations:
"modified caging optimization algorithms" » "modified caging optimisation algorithm", "modified caging estimation algorithms", "modified caging estimation algorithm", "modified staffing optimization algorithms"
"modified objective optimizer algorithmss" » "modified objective optimizer algorithms", "modified objective optimized algorithms", "modified objective optimized algorithm", "modified objective optimal algorithmss", "modified objective optimization algorithmss"

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 algorithms") OR ("modified objective optimizer algorithmss"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"modified caging optimization algorithms\") OR (\"modified objective optimizer algorithmss\"))".
• Removing quotes may allow a broader search: (( modified caging optimization algorithms ) OR ( modified objective optimizer algorithmss )).
• Adding a wildcard symbol may retrieve word variants: (("modified caging optimization algorithms") OR ("modified objective optimizer algorithmss"))*.