Perhaps you should try some spelling variations:
"model implementation science java programming" » "model implementation in java programming" (Expand search), "model implementation science and programming" (Expand search), "model implementation science based programming" (Expand search), "model implementation science goal programming" (Expand search), "model implementation science jaos programming" (Expand search), "model implementation science all programming" (Expand search)
"python using python python programming" » "python using pythons python programming" (Expand search), "python using piton python programming" (Expand search), "python using pitons python programming" (Expand search), "python usando python python programming" (Expand search), "python coding python python programming" (Expand search), "action using python python programming" (Expand search), "python in 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: "((\"model implementation science java programming\") OR (\"python using python python programming\"))~".
• Removing quotes may allow a broader search: (( model implementation science java programming ) OR ( python using python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("model implementation science java programming") OR ("python using python python programming"))*.