Perhaps you should try some spelling variations:
"modified objective optimization algorithmssssss" » "modified objective optimization algorithms", "modified objective optimisation algorithm", "modified multiobjective optimization algorithmssssss", "modified objective optimization algorithmsssssss", "modified objective optimisation algorithmssssss", "modified objective estimation algorithmssssss"
"modified caging optimization algorithm" » "modified caging optimization algorithms", "modified caging optimisation algorithm", "modified caging estimation algorithm", "modified staffing optimization algorithm"

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

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