Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc dan de snippets" » "thuc hanh de snippets", "hoc dan de snippets", "thuc vat de snippets", "thuc dan den snippets", "thuc dang de snippets", "thuc van 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: (((("thuc dan 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: (((("thuc dan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc dan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc dan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.