Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan dan di snippets" » "phan dau di snippets", "gian dan di snippets", "nhan tai di snippets", "nhan danh di snippets", "nhan dan da snippets", "nhan dan 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: (((("nhan dan di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan dan di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan dan di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dan di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.