Perhaps you should try some spelling variations:
"developer perceptions using java programing" » "developers perceptions using java programing" (Expand search), "development perception using java programing" (Expand search), "developer relations using java programing" (Expand search), "developer perception using java programing" (Expand search), "developer perceptions during java programing" (Expand search), "developer perceptions buying java programing" (Expand search), "developer perceptions using java programming" (Expand search), "developer perceptions using java programs" (Expand search), "developer perceptions using 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: (("developer perceptions using java programing") OR ("using coding python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"developer perceptions using java programing\") OR (\"using coding python python programming\"))".
• Removing quotes may allow a broader search: (( developer perceptions using java programing ) OR ( using coding python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("developer perceptions using java programing") OR ("using coding python python programming"))*.