Perhaps you should try some spelling variations:
"coder coder signal detection complexity" » "coder coder signal detection complete" (Expand search), "coder coder signal infection complexity" (Expand search), "coder coder signal execution complexity" (Expand search), "coder mode signal detection complexity" (Expand search), "coder power signal detection complexity" (Expand search), "coder power signals detection complexity" (Expand search), "coder decoder signal detection complexity" (Expand search), "code code signal detection complexity" (Expand search), "decoder codec signal detection complexity" (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 coder signal detection complexity") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder signal detection complexity\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder signal detection complexity ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder signal detection complexity") OR ("api python python python programming"))*.