Perhaps you should try some spelling variations:
"dung chung code snippets" » "dung cong code snippets", "dung trung code snippets", "truong chung code snippets", "dung chung co snippets"
"tran cfd code snippets" » "tran chi code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

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