Perhaps you should try some spelling variations:
"cong quoc dat snippets" » "cong cuoc dat snippets", "dong quoc dat snippets", "cong uoc dat snippets", "cong duoc dat snippets", "cong quoc dan snippets", "cong quoc danh snippets", "cong quoc dat slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cong quoc dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong quoc dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong quoc dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong quoc dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.