Perhaps you should try some spelling variations:
"coder coder sampling date problems" » "coder under sampling date problems" (Expand search), "coder over sampling date problems" (Expand search), "coder core sampling date problems" (Expand search), "coder coder sampling rate problems" (Expand search), "coder coder sampling data problems" (Expand search), "coder coder sampling rates problems" (Expand search), "coder coder sampling later problems" (Expand search), "coder coder sampling state problems" (Expand search), "coder decoder sampling date problems" (Expand search), "code code sampling date problems" (Expand search), "decoder codec sampling date problems" (Expand search)
"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)

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 sampling date problems") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder sampling date problems\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder sampling date problems ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder sampling date problems") OR ("on python python python programming"))*.