Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"dung viet code snippets" » "nang viet code snippets", "cong viet code snippets", "mang viet code snippets", "dung viet co snippets", "dung viet some snippets"
"using 3d code slippers" » "using 3 code slippers", "using a code slippers", "using _ code slippers", "using cfd code slippers"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using 3d code slippers") OR ("dung viet code snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( using 3d code slippers ) or ( dung viet code snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using 3d code slippers") or ("dung viet code snippets"))) or ("locating bugs code snippets"))*.