Perhaps you should try some spelling variations:
"dung san code slippers" » "dong san code slippers", "dung sai code slippers", "dung luan code slippers", "dung san co slippers", "dung san cong slippers"
"dung cu code snippets" » "dung cua code snippets", "dung co code snippets", "dung cho code snippets", "dung cfd code 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung san code slippers") or ("dung cu code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung san code slippers") OR ("dung cu code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung san code slippers ) or ( dung cu code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung san code slippers") or ("dung cu code snippets"))) or ("locating bug code snippets"))*.