Perhaps you should try some spelling variations:
"dung hoai trac slippers" » "dung hai trac slippers", "dang hoai trac slippers", "dung hoa trac slippers", "dung hoi trac slippers", "dung hoai bac slippers", "dung hoai trac slippery", "dung hoai trac grippers"
"hang java java snippets" » "hang 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 hoai trac slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung hoai trac slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hoai trac slippers ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hoai trac slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.