Perhaps you should try some spelling variations:
"modified a simulation algorithm" » "modified a solution algorithm", "modified a optimisation algorithm", "modified a estimation algorithms", "modified _ simulation algorithm", "modified df simulation algorithm", "modified adam simulation algorithm"
"modified adamdamdaptive estimation algorithm" » "modified _damdamdaptive estimation algorithm", "modified dfdamdamdaptive estimation algorithm", "modified adamdamdamdaptive estimation 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 adamdamdaptive estimation algorithm") or ("modified a simulation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified adamdamdaptive estimation algorithm") OR ("modified a simulation algorithm")).
• Removing quotes may allow a broader search: (( modified adamdamdaptive estimation algorithm ) or ( modified a simulation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified adamdamdaptive estimation algorithm") or ("modified a simulation algorithm"))*.