Perhaps you should try some spelling variations:
"defined network optimization algorithms" » "defined network optimisation algorithm", "defined network estimation algorithms", "defined network estimation algorithm", "defined network optimisation algorithms", "defined network estimation algorithmss"
"modified caging optimization algorithm" » "modified caging optimisation algorithm", "modified caging estimation algorithm", "modified caging estimation algorithms", "modified staffing optimization 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: (("modified caging optimization algorithm") or ("defined network optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified caging optimization algorithm") OR ("defined network optimization algorithms")).
• Removing quotes may allow a broader search: (( modified caging optimization algorithm ) or ( defined network optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("modified caging optimization algorithm") or ("defined network optimization algorithms"))*.