Perhaps you should try some spelling variations:
"coder coder perceptions affect program" » "coder coder perceptions about program" (Expand search), "coder coder perceptions at program" (Expand search), "coder coders perceptions affect program" (Expand search), "coder model perceptions affect program" (Expand search), "coder power perceptions affect program" (Expand search), "coder coder perceptions act program" (Expand search), "coder coder perceptions direct program" (Expand search), "coder coder perceptions effective program" (Expand search), "coder decoder perceptions affect program" (Expand search), "code code perceptions affect program" (Expand search), "decoder codec perceptions affect program" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons 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: (("coder coder perceptions affect program") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder perceptions affect program\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder perceptions affect program ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder perceptions affect program") OR ("_ python python python programming"))*.