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