Perhaps you should try some spelling variations:
"on python python python programming" » "on pythons python python programming" (Expand search), "on piton python python programming" (Expand search), "on pitons python python programming" (Expand search), "in python pythin python programming" (Expand search), "of python pythof python programming" (Expand search), "_ python pyth_ python programming" (Expand search)
"coder coder sensor with problems" » "coder copper sensor with problems" (Expand search), "coder color sensor with problems" (Expand search), "coder node sensor with problems" (Expand search), "coder decoder sensor with problems" (Expand search), "code code sensor with problems" (Expand search), "decoder codec sensor with problems" (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 sensor with problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sensor with problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sensor with problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sensor with problems") OR ("on python python python programming"))*.