Perhaps you should try some spelling variations:
"python using real snippets" » "python using metal snippets", "python using raw snippets", "python using real slippers"
"van cau duc slippery" » "van dau duc slippery", "van hau duc slippery", "van chat duc slippery", "van cao duc slippery", "van cau luc slippery", "van chu duc slippery", "van cau duc 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using real snippets\") OR (\"van cau duc slippery\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using real snippets ) OR ( van cau duc slippery ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using real snippets") OR ("van cau duc slippery"))) OR ("locating bug code snippets"))*.