Perhaps you should try some spelling variations:
"modified lighting estimation algorithmssss" » "modified lighting estimation algorithms", "modified lighting estimation algorithm", "modified caging estimation algorithmssss"
"modified objective optimisation algorithm" » "modified objective optimization algorithm", "modified multiobjective optimization algorithm", "modified objective optimization algorithms", "modified objective estimation algorithm", "modified objective 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 lighting estimation algorithmssss") or ("modified objective optimisation algorithm"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("modified lighting estimation algorithmssss") OR ("modified objective optimisation algorithm")).
• Removing quotes may allow a broader search: (( modified lighting estimation algorithmssss ) or ( modified objective optimisation algorithm )).
• Adding a wildcard symbol may retrieve word variants: (("modified lighting estimation algorithmssss") or ("modified objective optimisation algorithm"))*.