Perhaps you should try some spelling variations:
"coder coder coverage tobit model" » "coder code coverage tobit model" (Expand search), "coder cancer coverage tobit model" (Expand search), "coder center coverage tobit model" (Expand search), "coder coder coverage tomato model" (Expand search), "coder coder coverage to model" (Expand search), "coder coder coverage not model" (Expand search), "coder decoder coverage tobit model" (Expand search), "code code coverage tobit model" (Expand search), "decoder codec coverage tobit model" (Expand search), "coder coder coverage probit model" (Expand search), "coder coder coverage logit model" (Expand search), "coder coder coverage rabbit model" (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 coder coverage tobit model") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder coverage tobit model\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder coverage tobit model ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder coverage tobit model") OR ("api python python python programming"))*.