Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi quan con snippets" » "mai quan con snippets", "hai quan con snippets", "co quan con snippets", "moi qua con snippets", "moi quan co snippets", "moi quan doan 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: (((("moi quan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi quan con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi quan con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi quan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.