Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan eu case snippets" » "luan tieu case snippets", "luan dieu case snippets", "luan hieu case snippets", "luan cjeu case snippets", "luan sea case 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: (((("luan eu case snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan eu case snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan eu case snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan eu case snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.