Perhaps you should try some spelling variations:
teaching segmentation » tracking segmentation, learning segmentation, matching segmentation
segmentation methods » segmentation method, documentation methods
david haines » david staines, david barnes, david rains
david harris » david charles, david warren, david parra
david robins » david robbins, david robinson, david provins

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

• Performing a fuzzy search may retrieve terms with similar spellings: teaching segmentation methods design ((david haines) or (((david harris) or (david robins))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: teaching segmentation methods design ((david haines) OR (((david harris) OR (david robins)))).
• Adding a wildcard symbol may retrieve word variants: teaching segmentation methods design ((david haines) or (((david harris) or (david robins))))*.