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