Perhaps you should try some spelling variations:
"cuong dung code snippets" » "tuong duong code snippets", "ung dung code snippets", "thong dung code snippets", "cuong dung cong snippets", "cuong dung co snippets", "cuong dung de snippets", "cuong dung code slippers"
"danh cho code snippets" » "danh cho cong snippets", "danh cfd code snippets", "danh cho con snippets", "doanh cho code snippets", "dan cho code snippets", "dinh cho code snippets", "danh cho 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: (((("danh cho code snippets") or ("cuong dung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cho code snippets") OR ("cuong dung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cho code snippets ) or ( cuong dung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cho code snippets") or ("cuong dung code snippets"))) or ("locating bug code snippets"))*.