Perhaps you should try some spelling variations:
"teachers conceptions java java programing" » "teachers conceptions and java programing" (Expand search), "teachers conceptions an java programing" (Expand search), "teachers conceptions at java programing" (Expand search), "teachers conceptions java java programming" (Expand search), "teachers conceptions java java programs" (Expand search), "teachers conceptions java meta programming" (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.

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