Perhaps you should try some spelling variations:
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
changing optimization » staffing optimization
solution algorithm » evolution algorithm, convolution algorithms, evolutionary algorithm
modified changing » modified caging
modified passive » modified adaptive
passive solution » positive solutions, saline solution

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( modified changing optimization algorithms ) or ( modified passive solution algorithm ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( modified changing optimization algorithms ) OR ( modified passive solution algorithm ))*.