Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe ung co snippets" » "nghe dung co snippets", "nghe vung co snippets", "nghi ung co snippets", "nghe dung cho snippets", "nghe duong co 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: (((("nghe ung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghe ung co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe ung co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe ung co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.