Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe tai can snippets" » "ngheo tai can snippets", "nghe thai can snippets", "nghe tan can snippets", "nghe tai san snippets", "nghe tai cac snippets", "nghe tai ban 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 tai can 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 tai can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghe tai can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghe tai can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.