Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tin dan den snippets" » "tin don den snippets", "trinh dan den snippets", "tin dung den snippets", "tin ban den snippets", "tin van den snippets", "tin dan dung 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: (((("tin dan 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: (((("tin dan den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tin dan den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tin dan den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.