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