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