Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lieu den den snippets" » "lieu dien den snippets", "lieu de den snippets", "bieu dien den snippets", "lieu den dien snippets", "lieu dan den snippets", "lieu den nen snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lieu den den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lieu den den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lieu den den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lieu den den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.