Perhaps you should try some spelling variations:
"can tranh nhat slippers" » "can tran nhat slippers", "can trinh nhat slippers", "can thanh nhan slippers", "canh tranh nhat slippers", "tan tran nhat slippers", "van ranh nhat slippers", "can tranh nhat slippery", "can tranh nhat grippers"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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 ("can tranh nhat slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("can tranh nhat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( can tranh nhat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("can tranh nhat slippers"))) or ("locating bug code snippets"))*.