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