Perhaps you should try some spelling variations:
parameters optimization » parameter optimization, parameter estimation
optimization algorithms » optimisation algorithm, estimation algorithms, estimation algorithm
affecting mapping » affective mapping
method algorithm » mom algorithm
mapping method » sampling method, making methods

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( affecting mapping method algorithm ) or ( modified parameters optimization algorithms ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( affecting mapping method algorithm ) OR ( modified parameters optimization algorithms )).
• Adding a wildcard symbol may retrieve word variants: (( affecting mapping method algorithm ) or ( modified parameters optimization algorithms ))*.