Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu va cho snippets" » "ngu van cho snippets", "ngu ca cho snippets", "nguoi va cho snippets", "ngu va co snippets", "ngu va che 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: (((("ngu va 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: (((("ngu va cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu va cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu va cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.