Perhaps you should try some spelling variations:
"python using raw snippets" » "python using real snippets", "python using a snippets", "python using low snippets", "python using raw slippers"
"trac nha dan snippets" » "truc nha dan snippets", "trai nha dan snippets", "tran nhat dan snippets", "trac nhan dan snippets", "trac nhac dan snippets", "trac nha van snippets", "trac nha dan slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using raw snippets") or ("trac nha dan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using raw snippets") OR ("trac nha dan snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( python using raw snippets ) or ( trac nha dan snippets ))) or ( locating bug code snippets ))*.