Perhaps you should try some spelling variations:
"do thu nhan snippets" » "do thu nhap snippets", "do thu nhat snippets", "do thu ngan snippets", "do thuc nhan snippets", "doi thu nhan snippets", "do thuy nhan snippets", "do thu nhan slippers"
"python using a snippets" » "python using a 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 a snippets\") OR (\"do thu nhan snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using a snippets ) OR ( do thu nhan snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using a snippets") OR ("do thu nhan snippets"))) OR ("locating bug code snippets"))*.