Perhaps you should try some spelling variations:
"modified notion optimisation algorithm" » "modified notion optimization algorithms", "modified notion estimation algorithm", "modified notion estimation algorithms", "modified network optimization algorithm"
"modified thermal solution algorithm" » "modified thermal evolution algorithm", "modified thermal convolution algorithms", "modified thermal evolutionary algorithm", "modified chemical solution algorithm", "modified optimal solution algorithm", "modified minimal solution 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 notion optimisation algorithm") or ("modified thermal solution algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified notion optimisation algorithm") OR ("modified thermal solution algorithm")).
• Removing quotes may allow a broader search: (( modified notion optimisation algorithm ) or ( modified thermal solution algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified notion optimisation algorithm") or ("modified thermal solution algorithm"))*.