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