Perhaps you should try some spelling variations:
"dong cao dan snippets" » "duong cao dan snippets", "dong co dan snippets", "dong cho dan snippets", "dong cao dang snippets", "dong cao danh snippets", "dong cac dan snippets", "dong cao dan slippers"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets", "using c 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("dong cao dan snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dong cao dan snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dong cao dan snippets"))) or ("locating bug code snippets"))*.