Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nam danh soc snippets" » "nam danh code snippets", "nam dinh soc snippets", "nam dan soc snippets", "nam danh hoc snippets", "nam nganh soc 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 soc 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 soc snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nam danh soc snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nam danh soc snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.