Perhaps you should try some spelling variations:
"doanh cua code snippets" » "doanh luan code snippets", "doanh cua cong snippets", "doanh cua co snippets", "doanh cfd code snippets", "doanh cua code slippers"
"dong hung code snippets" » "dong huong code snippets", "dang hung code snippets", "cong hung code snippets", "dong 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: (((("doanh cua code snippets") or ("dong hung code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh cua code snippets") OR ("dong hung code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh cua code snippets ) or ( dong hung code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh cua code snippets") or ("dong hung code snippets"))) or ("locating bug code snippets"))*.