Perhaps you should try some spelling variations:
"coder coder varying tree problems" » "coder under varying tree problems" (Expand search), "coder does varying tree problems" (Expand search), "coder after varying tree problems" (Expand search), "coder coder varying three problems" (Expand search), "coder coder varying tree problem" (Expand search), "coder coder varying the problems" (Expand search), "coder coder varying degree problems" (Expand search), "coder coder varying net problems" (Expand search), "coder decoder varying tree problems" (Expand search), "code code varying tree problems" (Expand search), "decoder codec varying tree problems" (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 varying tree problems") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder varying tree problems\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder varying tree problems ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder varying tree problems") OR ("api python python python programming"))*.