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