Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu luan che snippets" » "cu luan che snippets", "chu xuan che snippets", "chu tuan che snippets", "chu luan chi snippets", "chu quan che snippets", "chu luan chat 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: (((("chu luan che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chu luan che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu luan che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu luan che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.