Perhaps you should try some spelling variations:
"dung tien cuong snippets" » "dung tien chuong snippets", "dung tien luong snippets", "dung tien cong snippets", "duong tien cuong snippets", "dung tren cuong snippets", "dong tien cuong snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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: (((("dung tien cuong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung tien cuong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung tien cuong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung tien cuong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.