Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can luan den snippets" » "dan luan den snippets", "san luan den snippets", "han luan den snippets", "can quan den snippets", "can luan de snippets", "can luan len 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: (((("can luan 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: (((("can luan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can luan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can luan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.