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