Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tan tran doc snippets" » "tan tran duc snippets", "tan than doc snippets", "tan tranh duoc snippets", "toan tran doc snippets", "than tran doc snippets", "tuan tran doc 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: (((("tan tran doc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan tran doc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan tran doc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan tran doc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.