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