Perhaps you should try some spelling variations:
"coder precoder challenge period programming" » "coder unprecedent challenge period programming" (Expand search), "coder precoder challenge end programming" (Expand search), "coder precoder challenge learning programming" (Expand search), "coder precoder challenge gerhard programming" (Expand search), "coder precoder challenge posed programming" (Expand search), "coder precoder challenge from programming" (Expand search), "coder decoder challenge period programming" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api 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 precoder challenge period programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder challenge period programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder challenge period programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder challenge period programming") OR ("api python python python programming"))*.