Perhaps you should try some spelling variations:
"cong dung core snippets" » "cuong dung core snippets", "cong dong core snippets", "cong luong core snippets", "cong dung cong snippets", "cong dung co snippets", "cong dung coc snippets"
"cong dung con snippets" » "cuong dung con snippets", "cong dong con snippets", "cong luong con snippets", "cong dung cong snippets", "cong dung von snippets", "cong dung co 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: "((((\"cong dung core snippets\") OR (\"cong dung con snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( cong dung core snippets ) OR ( cong dung con snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cong dung core snippets") OR ("cong dung con snippets"))) OR ("locating bug code snippets"))*.