Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao luan chu snippets" » "dan luan chu snippets", "dao xuan chu snippets", "dat luan chu snippets", "dao luan chi snippets", "dao luan che snippets", "dao quan chu 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 luan chu 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 luan chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao luan chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao luan chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.