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