Perhaps you should try some spelling variations:
"coder precoder vehicles linear programming" » "coder probe vehicles linear programming" (Expand search), "coder power vehicles linear programming" (Expand search), "coder precoder vehicles near programming" (Expand search), "coder precoder vehicles deliver programming" (Expand search), "coder decoder vehicles linear programming" (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)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder precoder vehicles linear programming") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder precoder vehicles linear programming\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder precoder vehicles linear programming ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder precoder vehicles linear programming") OR ("api python python python programming"))*.