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