Perhaps you should try some spelling variations:
"coder coder controlled trial problem" » "coder under controlled trial problem" (Expand search), "coder mode controlled trial problem" (Expand search), "coder node controlled trial problem" (Expand search), "coder coder controlled real problem" (Expand search), "coder coder controlled oral problem" (Expand search), "coder coder controlled triangle problem" (Expand search), "coder decoder controlled trial problem" (Expand search), "code code controlled trial problem" (Expand search), "decoder codec controlled trial 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), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder controlled trial problem\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder controlled trial problem ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder controlled trial problem") OR ("api python python python programming"))*.