Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu cau son snippets" » "ngu ca son snippets", "nhu cau son snippets", "ngu cu son snippets", "ngu cau song snippets", "ngu cao son snippets", "ngu cau cong 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 cau son 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 cau son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu cau son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu cau son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.