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