Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"quan doan cau snippets" » "quan doan code snippets", "quan hoang cau snippets", "chuan doan cau snippets", "chan doan cau snippets", "quan toan cau snippets", "quan doan dau snippets", "quan doan cap snippets"
"dung java java snippets" » "dung va java 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: (((("dung java java snippets") or ("quan doan cau snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("quan doan cau snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( quan doan cau snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("quan doan cau snippets"))) or ("locating bug core snippets"))*.