Perhaps you should try some spelling variations:
"dang duc trinh slippers" » "dang duc thinh slippers", "dang doc trinh slippers", "dang qua trinh slippers", "dang quoc trinh slippers", "dao duc trinh slippers", "dang su trinh slippers", "dang duc trinh slippery", "dang duc trinh 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: (((("dang duc trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang duc trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang duc trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang duc trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.