Perhaps you should try some spelling variations:
"tree segmentation python _ python" » "tree segmentation method _ python" (Expand search), "tree segmentation methods _ python" (Expand search), "tree segmentation on _ python" (Expand search), "the segmentation python _ python" (Expand search), "scene segmentation python _ python" (Expand search), "bone segmentation python _ python" (Expand search)
"python data python python programming" » "python data pythons python programming" (Expand search), "python data piton python programming" (Expand search), "python data pitons python programming" (Expand search), "python dado python python programming" (Expand search), "python gate python python programming" (Expand search), "python dados python python programming" (Expand search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"tree segmentation python _ python\") OR (\"python data python python programming\"))~".
• Removing quotes may allow a broader search: (( tree segmentation python _ python ) OR ( python data python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("tree segmentation python _ python") OR ("python data python python programming"))*.