Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hang di snippets" » "duc thang di snippets", "duc hoang di snippets", "duc hung di snippets", "duc hang doi snippets", "duc hang vi snippets", "duc hang dien 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: (((("duc hang di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hang di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hang di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hang di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.