Perhaps you should try some spelling variations:
"tran thanh java slippers" » "ban thanh java slippers", "van thanh java slippers", "quan thanh java slippers", "tran thanh va slippers", "tran trinh java slippers", "tran think java slippers", "tran thanh java slippery", "tran thanh java 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"

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 thanh java 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 thanh java slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran thanh java slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran thanh java slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.