Perhaps you should try some spelling variations:
"phan nguoi cong snippets" » "phau nguoi cong snippets", "nhan nguoi cong snippets", "phai nguoi cong snippets", "phan nguoi muong snippets", "phan nguoi thong snippets", "phan nguoi nung 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: (((("phan nguoi cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan nguoi cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan nguoi cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan nguoi cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.