Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tong quan trac slippers" » "thong quan trac slippers", "tong luan trac slippers", "luong quan trac slippers", "tong quang trach slippers", "tong quang tran slippers", "tong quan tri slippers", "tong quan trac slippery", "tong quan trac 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 ("tong quan trac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("tong quan trac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( tong quan trac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("tong quan trac slippers"))) or ("locating bug code snippets"))*.