Perhaps you should try some spelling variations:
"dong hoan tran slippers" » "dong hoa tran slippers", "cong hoan tran slippers", "dang hoang tran slippers", "dong hoang tran slippers", "dong thoan tran slippers", "dong toan tran slippers", "dong hoan tran slippery", "dong hoan 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 hoan 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 hoan tran slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hoan tran slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hoan tran slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.