Perhaps you should try some spelling variations:
"dung viet code snippets" » "nang viet code snippets", "cong viet code snippets", "mang viet code snippets", "dung viet co snippets", "dung viet some snippets", "dung viet code slippers"
"rong cho code snippets" » "trong cho code snippets", "dong cho code snippets", "luong cho code snippets", "rong cho cong snippets", "rong cfd code snippets", "rong cho con snippets", "rong cho 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: "((((\"rong cho code snippets\") OR (\"dung viet code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( rong cho code snippets ) OR ( dung viet code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("rong cho code snippets") OR ("dung viet code snippets"))) OR ("locating bug code snippets"))*.