Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh hat do snippets" » "trinh chat do snippets", "trinh phat do snippets", "trinh nhat do snippets", "trinh hat doi snippets", "trinh hat dao snippets", "trinh hat de 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: (((("trinh hat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh hat do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh hat do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh hat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.