Perhaps you should try some spelling variations:
"dung vieeinh code snippets" » "dung vinh code snippets", "dung vien code snippets", "dung vaieeinh code snippets", "dung viieeinh code snippets", "dung veieeinh code snippets"
"dung v core snippets" » "dung va core snippets", "dung vi core snippets", "dung ve core snippets", "dung _ core 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: "((((\"dung v core snippets\") OR (\"dung vieeinh code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung v core snippets ) OR ( dung vieeinh code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung v core snippets") OR ("dung vieeinh code snippets"))) OR ("locating bug code snippets"))*.