Perhaps you should try some spelling variations:
"coder coder _ mathematics programing" » "coder coder _ mathematical programing" (Expand search), "coder coder _ mathematical programming" (Expand search), "coder coder _ mathematics program" (Expand search), "coder decoder _ mathematics programing" (Expand search), "code code _ mathematics programing" (Expand search), "decoder codec _ mathematics programing" (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 coder _ mathematics programing") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder _ mathematics programing\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder _ mathematics programing ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder _ mathematics programing") OR ("api python python python programming"))*.