Perhaps you should try some spelling variations:
"dang dieu trac slippers" » "dang dieu tra slippers", "dang dien trac slippers", "dang dieu trang slippers", "dan dieu trac slippers", "dong dieu trac slippers", "nang dieu trac slippers", "dang dieu trac slippery", "dang dieu 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: (((("dang dieu 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: (((("dang dieu trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang dieu trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang dieu trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.