Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phan cuu cong snippets" » "phan cau cong snippets", "phan huu cong snippets", "phan cung cong snippets", "phan cua cong snippets", "phan thu cong snippets", "phan cac cong 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 cuu 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 cuu cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan cuu cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan cuu cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.