Perhaps you should try some spelling variations:
"python using real snippets" » "python using metal snippets", "python using raw snippets"
"van chu duc slippers" » "van chi duc slippers", "van phu duc slippers", "van cau duc slippers", "van thu duc slippers", "van chua duoc slippers", "van cuu duoc slippers", "van chu duc slippery", "van chu duc grippers"
"locating bug code snippets" » "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 chu duc slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using real snippets ) OR ( van chu duc slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using real snippets") OR ("van chu duc slippers"))) OR ("locating bug code snippets"))*.