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