Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tan toan cau snippets" » "tan tran cau snippets", "tap toan cau snippets", "van toan cau snippets", "tan toan cao snippets", "tan toan ban snippets", "tan toan tap 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 toan cau 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 toan cau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan toan cau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan toan cau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.