Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi quan den snippets" » "hoi quang den snippets", "hai quan den snippets", "moi quan den snippets", "hoi quan doan snippets", "hoi quan he snippets", "hoi quan doi 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: (((("hoi quan 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: (((("hoi quan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi quan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi quan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.