Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang hoi den snippets" » "nang hoc den snippets", "nang noi den snippets", "nang ho den snippets", "nang hoi dien snippets", "nang hoi dan snippets", "nang moi 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: (((("nang hoi 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: (((("nang hoi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang hoi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang hoi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.