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