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