Perhaps you should try some spelling variations:
"coder coder motivation theory problems" » "coder coder estimation theory problems" (Expand search), "coder coder motivation to problems" (Expand search), "coder coder innovation theory problems" (Expand search), "coder power motivation theory problems" (Expand search), "coder worker motivation theory problems" (Expand search), "coder gender motivation theory problems" (Expand search), "coder coder motivation theory problem" (Expand search), "coder coder motivation their problems" (Expand search), "coder coder motivation therapy problems" (Expand search), "coder decoder motivation theory problems" (Expand search), "code code motivation theory problems" (Expand search), "decoder codec motivation theory problems" (Expand search)
"and python python python programming" » "and pythons python python programming" (Expand search), "and piton python python programming" (Expand search), "and pitons python python programming" (Expand search), "in python python python programming" (Expand search), "on python python python programming" (Expand search), "api python 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 motivation theory problems") OR ("and python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder motivation theory problems\") OR (\"and python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder motivation theory problems ) OR ( and python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder motivation theory problems") OR ("and python python python programming"))*.