Perhaps you should try some spelling variations:
"modified multiobjective optimization algorithms" » "modified multiobjective optimisation algorithm", "modified multiobjective estimation algorithms", "modified multiobjective estimation algorithm"
"model using raw algorithm" » "model using adam algorithm", "model using _ algorithm", "model using mom algorithm", "code using raw algorithm", "models nursing raw algorithm", "powder using raw algorithm", "model using real algorithm", "model using a algorithm", "model using low algorithm"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("model using raw algorithm") or ("modified multiobjective optimization algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("model using raw algorithm") OR ("modified multiobjective optimization algorithms")).
• Removing quotes may allow a broader search: (( model using raw algorithm ) or ( modified multiobjective optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (("model using raw algorithm") or ("modified multiobjective optimization algorithms"))*.