Perhaps you should try some spelling variations:
"coder model using clustering program" » "coder model using clustering problem" (Expand search), "coder model using neutering program" (Expand search), "coder model using clustering problems" (Expand search), "coder model and clustering program" (Expand search), "coder model means clustering program" (Expand search), "cover model using clustering program" (Expand search), "decoder model using clustering program" (Expand search), "copper model using clustering program" (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 model using clustering program\") OR (\"api python python python programming\"))~".
• Removing quotes may allow a broader search: (( coder model using clustering program ) OR ( api python python python programming ))~.
• Adding a wildcard symbol may retrieve word variants: (("coder model using clustering program") OR ("api python python python programming"))*.