Perhaps you should try some spelling variations:
"modified bayesian estimation algorithms" » "modified bayesian estimation algorithm", "modified bayesian optimization algorithms", "modified bayesian optimisation algorithm"
"modified changing estimation algorithms" » "modified changing estimation algorithm", "modified changing optimization algorithms", "modified changing optimisation algorithm", "modified channel estimation algorithms", "modified charging station algorithms", "modified caging estimation algorithms"

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