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