Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua cong cho snippets" » "luat cong cho snippets", "luan cong cho snippets", "cua cong cho snippets", "lua dong cho snippets", "lua cong co snippets", "lua rong cho 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: (((("lua cong 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: (((("lua cong cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua cong cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua cong cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.