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