Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"nam oi duc snippets" » "nam hoi duc snippets", "nam doi duc snippets", "nam noi duc snippets", "nam hoai duc snippets"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nam oi duc snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( nam oi duc snippets ) or ( python using data snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("nam oi duc snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.