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