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