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