Perhaps you should try some spelling variations:
"cong cau noi snippets" » "cong cu noi snippets", "cong chuc noi snippets", "thong cau noi snippets", "cong cau hoi snippets", "cong cau doi snippets", "cong cach noi snippets"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets"
"locating bug code snippets" » "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 c code snippets\") OR (\"cong cau noi snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using c code snippets ) OR ( cong cau noi snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") OR ("cong cau noi snippets"))) OR ("locating bug code snippets"))*.