Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ninh duc den snippets" » "minh duc den snippets", "dinh duc den snippets", "tinh duc den snippets", "ninh duc dien snippets", "ninh duc dan snippets", "ninh duy den 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: (((("ninh duc 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: (((("ninh duc den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ninh duc den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ninh duc den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.