Perhaps you should try some spelling variations:
"coder coding coding optical properties" » "coder coding coding physical properties" (Expand search), "coder coding moving optical properties" (Expand search), "coder coding counting optical properties" (Expand search), "coder coding modeling optical properties" (Expand search), "coder coding decoding optical properties" (Expand search), "coder coding using optical properties" (Expand search), "coder coding canine optical properties" (Expand search), "modern coding coding optical properties" (Expand search), "color coding coding optical properties" (Expand search), "odor coding coding optical properties" (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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coding coding optical properties") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coding coding optical properties\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coding coding optical properties ) OR ( api python python python programming ))*.