Perhaps you should try some spelling variations:
"coder coder confidence externalizing problems" » "coder coder confidence extending problems" (Expand search), "coder model confidence externalizing problems" (Expand search), "coder cobar confidence externalizing problems" (Expand search), "coder upper confidence externalizing problems" (Expand search), "coder decoder confidence externalizing problems" (Expand search), "code code confidence externalizing problems" (Expand search), "decoder codec confidence externalizing problems" (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 confidence externalizing problems") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder confidence externalizing problems\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder confidence externalizing problems ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder confidence externalizing problems") OR ("_ python python python programming"))*.