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