Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua day nghe snippets" » "lua dang nghe snippets", "lua van nghe snippets", "lua nam nghe snippets", "luan day nghe snippets", "luat day nghe snippets", "lua dao nghe 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 day nghe 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 day nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua day nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua day nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.