Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cum van den snippets" » "cuu van den snippets", "cua van den snippets", "cum dan den snippets", "cum van de snippets", "cum van der snippets", "cum ban den 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: (((("cum van 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: (((("cum van den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cum van den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cum van den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.