Perhaps you should try some spelling variations:
"dong duoc tran slippers" » "dong quoc tran slippers", "dong duong tran slippers", "trong duoc tran slippers", "dong duoc tren slippers", "dong cuoc tranh slippers", "dong duoc thanh slippers", "dong duoc tran slippery", "dong duoc 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: (((("dong duoc 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: (((("dong duoc tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong duoc tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong duoc tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.