Perhaps you should try some spelling variations:
"han 2 code slippers" » "phan 2 code slippers", "nhan 2 code slippers", "hanh 2 code slippers"
"dung knphanhhg code snippets" » "dung knpphanhhg code snippets", "dung knpnhanhhg code snippets", "dung knphanhhhg code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("han 2 code slippers") or ("dung knphanhhg code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han 2 code slippers") OR ("dung knphanhhg code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han 2 code slippers ) or ( dung knphanhhg code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han 2 code slippers") or ("dung knphanhhg code snippets"))) or ("locating bug code snippets"))*.