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