Perhaps you should try some spelling variations:
variational segmentation » variational formulation, variational iteration
formation segmentation » estimation segmentation, motion segmentation, formation implementation
methods decision » methods design, ethics decision, methods session
decision twenty » decision theory, decision agent, decision theory6
twenty lib » twenty six

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((formation segmentation) or (variational segmentation)) methods decision twenty lib~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((formation segmentation) OR (variational segmentation)) methods decision twenty lib.
• Adding a wildcard symbol may retrieve word variants: ((formation segmentation) or (variational segmentation)) methods decision twenty lib*.