Perhaps you should try some spelling variations:
"dung lan tranh slippers" » "dung lanh tranh slippers", "dung luan tranh slippers", "dung can tranh slippers", "dung land tranh slippers", "dung lam tranh slippers", "dung lan tranh slippery", "dung lan tranh 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 lan tranh 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 lan tranh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung lan tranh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung lan tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.