Perhaps you should try some spelling variations:
"modified market optimization algorithm" » "modified market optimization algorithms", "modified market optimisation algorithm", "modified market estimation algorithms", "modified game optimization algorithm", "modified parameter optimization algorithm", "modified market capitalization algorithm", "modified male optimization algorithm"
"modified parameter estimation algorithm" » "modified parameter estimates algorithm", "modified parameter optimization algorithm"

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

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