Perhaps you should try some spelling variations:
"coder validation coder teaching proposal" » "coder validation coder teaching process" (Expand search), "code validation coder teaching proposal" (Expand search), "model validation coder teaching proposal" (Expand search), "models validation coder teaching proposal" (Expand search), "coder validation model teaching proposal" (Expand search), "coder validation under teaching proposal" (Expand search), "coder validation models teaching proposal" (Expand search), "coder validation code teaching proposal" (Expand search), "coder validation poder teaching proposal" (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 validation coder teaching proposal") OR ("on python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder validation coder teaching proposal\") OR (\"on python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder validation coder teaching proposal ) OR ( on python python python programming ))*.