Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"da khoang de snippets" » "dai khoang de snippets", "tao khoang de snippets", "da khoa de snippets", "da hoang de snippets", "da khong de snippets", "da hoang le 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: (((("da khoang 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: (((("da khoang de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( da khoang de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("da khoang de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.