Perhaps you should try some spelling variations:
"vessel segmentation python and python" » "based segmentation python and python" (Expand search), "lesion segmentation python and python" (Expand search), "vessel segmentation method and python" (Expand search), "vessel segmentation methods and python" (Expand search), "vessel segmentation on and python" (Expand search), "vessel segmentation python based python" (Expand search), "vessel segmentation python in python" (Expand search), "vessel segmentation python on python" (Expand search), "vessel segmentation python api python" (Expand search)
"python coding python python programming" » "python codigo python python programming" (Expand search), "action coding python python programming" (Expand search), "python code python python programming" (Expand search), "python codigos python python programming" (Expand search), "python using python python programming" (Expand search), "python coding pythons python programming" (Expand search), "python coding piton python programming" (Expand search), "python coding pitons python programming" (Expand search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("vessel segmentation python and python") OR ("python coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"vessel segmentation python and python\") OR (\"python coding python python programming\"))".
• Removing quotes may allow a broader search: (( vessel segmentation python and python ) OR ( python coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("vessel segmentation python and python") OR ("python coding python python programming"))*.