Perhaps you should try some spelling variations:
"coder coder testing sampling precision" » "coder coder teaching sampling precision" (Expand search), "coder coder hastings sampling precision" (Expand search), "coder coder test sampling precision" (Expand search), "coder model testing sampling precision" (Expand search), "coder mode testing sampling precision" (Expand search), "coder cancer testing sampling precision" (Expand search), "coder decoder testing sampling precision" (Expand search), "code code testing sampling precision" (Expand search), "decoder codec testing sampling precision" (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 testing sampling precision") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder testing sampling precision\") OR (\"on python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder testing sampling precision ) OR ( on python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder testing sampling precision") OR ("on python python python programming"))*.