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