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