Perhaps you should try some spelling variations:
"coder coder with mathematic model" » "coder coder with mathematical model" (Expand search), "coder coder with mathematical models" (Expand search), "coder coder with mathematic modeling" (Expand search), "coder coder with mathematics model" (Expand search), "coder coder with thematic model" (Expand search), "coder decoder with mathematic model" (Expand search), "code code with mathematic model" (Expand search), "decoder codec with mathematic model" (Expand search), "coder codes with mathematic model" (Expand search), "coder code with mathematic model" (Expand search), "coder cover with mathematic model" (Expand search)
"in python python python programming" » "in pythons python python programming" (Expand search), "in piton python python programming" (Expand search), "in pitons python python programming" (Expand search), "_ 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 with mathematic model") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder with mathematic model\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder with mathematic model ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder with mathematic model") OR ("in python python python programming"))*.