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