Perhaps you should try some spelling variations:
"don thuan trac slippers" » "don phan trac slippers", "don thuan thuc slippers", "don thuat tac slippers", "dong thuan trac slippers", "dinh thuan trac slippers", "doan chuan trac slippers", "don thuan trac slippery", "don thuan 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: (((("don thuan 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: (((("don thuan trac slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don thuan trac slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don thuan trac slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.