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