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