Perhaps you should try some spelling variations:
"coder coder based material testing" » "coder coder based materials testing" (Expand search), "coder decoder based material testing" (Expand search), "code code based material testing" (Expand search), "decoder codec based material testing" (Expand search), "coder code based material testing" (Expand search), "coder foder based material testing" (Expand search), "coder codec based material testing" (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 based material testing") OR ("in python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder based material testing\") OR (\"in python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder based material testing ) OR ( in python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder based material testing") OR ("in python python python programming"))*.