Perhaps you should try some spelling variations:
"dung bich tran slippers" » "duong bich tran slippers", "dung dich tran slippers", "dung ninh tran slippers", "dung tich than slippers", "dung tich toan slippers", "dung bich loan slippers", "dung bich tran slippery", "dung bich tran 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 bich tran 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 bich tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung bich tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung bich tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.