Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu nhat da snippets" » "hieu luat da snippets", "hieu suat da snippets", "biet nhat da snippets", "hieu nha da snippets", "hieu nhat de snippets", "hieu nhat ha 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: (((("hieu nhat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu nhat da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu nhat da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu nhat da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.