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