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