Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan cach le snippets" » "luan hach le snippets", "luan mach le snippets", "luan tach le snippets", "luan cach de snippets", "luan cac le snippets", "luan cach ben 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: (((("python using java snippets") or ("luan cach le snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("luan cach le snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( luan cach le snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("luan cach le snippets"))) or ("locating bug code snippets"))*.