Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"dung trung code snippets" » "dung trong code snippets", "quang trung code snippets", "truong trung code snippets", "dung trung co snippets", "dung trung code slippers"
"using _ code snippets" » "using _ code slippers"

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 _ code snippets\") OR (\"dung trung code snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using _ code snippets ) OR ( dung trung code snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using _ code snippets") OR ("dung trung code snippets"))) OR ("locating bugs code snippets"))*.