Perhaps you should try some spelling variations:
functions computation » function computation, functions composition, function composition
skin segmentation » skin pigmentation, brain segmentation, motion segmentation
method discursive » methods dispersive, methods discourse
discursive based » discourse based, discussion based, discipline based
based active » based adaptive

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((functions computation) or (skin segmentation)) method discursive based active~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((functions computation) OR (skin segmentation)) method discursive based active.
• Adding a wildcard symbol may retrieve word variants: ((functions computation) or (skin segmentation)) method discursive based active*.