Perhaps you should try some spelling variations:
"tran tranh luan slippers" » "tran thanh luan slippers", "trang trinh luan slippers", "trong tranh luan slippers", "tran trinh luan slippers", "tran trinh luat slippers", "tran doanh luan slippers", "tran tranh luan slippery", "tran tranh luan 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 ("tran tranh luan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tran tranh luan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tran tranh luan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tran tranh luan slippers"))) or ("locating bug code snippets"))*.