Perhaps you should try some spelling variations:
"coder coder string theory course" » "coder coder nursing theory course" (Expand search), "coder coder string theory discourse" (Expand search), "coder coder string therapy course" (Expand search), "coder coder string theory case" (Expand search), "coder cordel string theory course" (Expand search), "coder closed string theory course" (Expand search), "coder modelo string theory course" (Expand search), "coder decoder string theory course" (Expand search), "code code string theory course" (Expand search), "decoder codec string theory course" (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 string theory course\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder coder string theory course ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder coder string theory course") OR ("api python python python programming"))*.