Perhaps you should try some spelling variations:
"dung hieu data snippets" » "dong hieu data snippets", "dung tieu data snippets", "trung hieu data snippets", "dung lieu data snippets", "dung bieu dat snippets", "dung hieu bat snippets", "dung hieu data slippers"
"dung cong code snippets" » "dung trong code snippets", "dung cong cong snippets", "dung cong co snippets", "dung cong che snippets", "dung cong 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: (((("dung hieu data snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hieu data snippets") OR ("dung cong code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hieu data snippets ) or ( dung cong code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hieu data snippets") or ("dung cong code snippets"))) or ("locating bug code snippets"))*.