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