Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan dai do snippets" » "nhan tai do snippets", "nhan dan do snippets", "phan dai do snippets", "nhan dai so snippets", "nhan dai de snippets", "nhan dai o 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 dai 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: (((("nhan dai do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan dai do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dai do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.