Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua giac do snippets" » "luan giai do snippets", "luat giao do snippets", "loan giac do snippets", "lua gia do snippets", "lua giac mo snippets", "lua giac duoc 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 giac do 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 giac do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua giac do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua giac do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.