Perhaps you should try some spelling variations:
"coder propagation models java programing" » "coder propagation model java programing" (Expand search), "mode propagation models java programing" (Expand search), "model propagation models java programing" (Expand search), "modes propagation models java programing" (Expand search), "coder propagation models java programming" (Expand search), "coder propagation models java programs" (Expand search), "coder propagation models meta programming" (Expand search), "coder propagation modelos java programing" (Expand search), "coder propagation modelo java programing" (Expand search)
"using coding python python programming" » "using codigo python python programming" (Expand search), "using codigos python python programming" (Expand search), "using using python python programming" (Expand search), "using coding pythons python programming" (Expand search), "using coding piton python programming" (Expand search), "using coding pitons python programming" (Expand search), "using coping python python programming" (Expand search), "using coating python python programming" (Expand search), "using cooking 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: "((\"coder propagation models java programing\") OR (\"using coding python python programming\"))~".
• Removing quotes may allow a broader search: (( coder propagation models java programing ) OR ( using coding python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder propagation models java programing") OR ("using coding python python programming"))*.