Perhaps you should try some spelling variations:
"duong che code snippets" » "dong che code snippets", "dung che code snippets", "luong che code snippets", "duong cfd code snippets", "duong che cong snippets", "duong che code slippers"
"using a code snippets" » "using a code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: "((((\"using a code snippets\") OR (\"duong che code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using a code snippets ) OR ( duong che code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using a code snippets") OR ("duong che code snippets"))) OR ("locating bug code snippets"))*.