Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"danh cac phan slippers" » "dinh cac phan slippers", "danh ca phan slippers", "hanh cac phan slippers", "danh cac nhan slippers", "danh cao phan slippers", "danh cap phan slippers", "danh cac phan slippery", "danh cac phan grippers"
"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: (((("dung java java snippets") or ("danh cac phan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("danh cac phan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( danh cac phan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("danh cac phan slippers"))) or ("locating bug code snippets"))*.