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