Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"phan cac chat snippets" » "nhan cach chat snippets", "phan dau chat snippets", "phan lap chat snippets", "phan cao chat snippets", "phan cac thuat snippets", "phan cac nha 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 cac chat 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 cac chat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan cac chat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan cac chat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.