Perhaps you should try some spelling variations:
"liver segmentation method and programming" » "liver segmentation methods and programming" (Expand search), "based segmentation method and programming" (Expand search), "tumor segmentation method and programming" (Expand search), "liver segmentation method _ programming" (Expand search), "liver segmentation method goal programming" (Expand search)
"python code python python programming" » "python code pythons python programming" (Expand search), "python code piton python programming" (Expand search), "python code pitons python programming" (Expand search), "python codigo python python programming" (Expand search), "python pacote python 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: (("liver segmentation method and programming") OR ("python code python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"liver segmentation method and programming\") OR (\"python code python python programming\"))".
• Removing quotes may allow a broader search: (( liver segmentation method and programming ) OR ( python code python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("liver segmentation method and programming") OR ("python code python python programming"))*.