Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dat phan cac snippets" » "data phan cac snippets", "dam phan cac snippets", "sat phan cac snippets", "dat nhan cach snippets", "dat phan dau snippets", "dat phan lap 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: (((("dat phan cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat phan cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat phan cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat phan cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.