Perhaps you should try some spelling variations:
"coder coder lidar estimation problem" » "coder coder lidar restoration problem" (Expand search), "coder coder lidar optimization problem" (Expand search), "coder coder lidar education problem" (Expand search), "coder coder linear estimation problem" (Expand search), "coder coder lidar station problem" (Expand search), "coder coder order estimation problem" (Expand search), "coder decoder lidar estimation problem" (Expand search), "code code lidar estimation problem" (Expand search), "decoder codec lidar estimation problem" (Expand search), "coder poder cuidar estimation 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), "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 lidar estimation problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder lidar estimation problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder lidar estimation problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder lidar estimation problem") OR ("api python python python programming"))*.