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