Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao nhi den snippets" » "dao thi den snippets", "dao nha den snippets", "dao nhu den snippets", "dao thai den snippets", "dao khi dien snippets", "dao nghi don 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: (((("dao nhi 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: (((("dao nhi den snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao nhi den snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao nhi den snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.