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