Perhaps you should try some spelling variations:
"anh viet code snippets" » "anh viet co snippets", "anh viet some snippets", "anh viet code slippers"
"dung vaaea code snippets" » "dung vaaea 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: "((((\"dung vaaea code snippets\") OR (\"anh viet code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung vaaea code snippets ) OR ( anh viet code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung vaaea code snippets") OR ("anh viet code snippets"))) OR ("locating bug code snippets"))*.