Perhaps you should try some spelling variations:
"nhung tri trac slippers" » "nhung bai trac slippers", "nhung bi trac slippers", "nhung gi trac slippers", "nhung thi trac slippers", "nhung tri tac slippers", "nhung tri thuc slippers", "nhung tri trac slippery", "nhung tri trac 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: (((("nhung tri trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhung tri trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhung tri trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhung tri trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.