Perhaps you should try some spelling variations:
"han viet code snippets" » "han viet co snippets", "han viet some snippets", "san viet code snippets", "van viet code snippets", "dan viet code snippets"
"dung hung code slippers" » "dung chung code slippers", "dung nhung code slippers", "dung huong code slippers"
"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: (((("han viet code snippets") or ("dung hung code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han viet code snippets") OR ("dung hung code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han viet code snippets ) or ( dung hung code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han viet code snippets") or ("dung hung code slippers"))) or ("locating bug code snippets"))*.