Perhaps you should try some spelling variations:
"dung doi trinh slippers" » "dung doc trinh slippers", "dung doi tinh slippers", "dung dong trinh slippers", "huong doi trinh slippers", "dung tai trinh slippers", "dung co trinh slippers", "dung doi trinh slippery", "dung doi trinh 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 doi trinh 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 doi trinh slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung doi trinh slippers ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung doi trinh slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.