Perhaps you should try some spelling variations:
"cong vang code snippets" » "cong lang code snippets", "cong quang code snippets", "cong ngang code snippets", "cong vang de snippets", "cong vang code slippers"
"dung cac code snippets" » "luong cac code snippets", "dung cho code snippets", "dung tai code snippets", "dung cac cong snippets", "dung cac co snippets", "dung cac che snippets", "dung cac 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: "((((\"cong vang code snippets\") OR (\"dung cac code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( cong vang code snippets ) OR ( dung cac code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cong vang code snippets") OR ("dung cac code snippets"))) OR ("locating bug code snippets"))*.