Perhaps you should try some spelling variations:
"phan dua trinh slippers" » "phan qua trinh slippers", "phan xuan trinh slippers", "phan quy trinh slippers", "phan duc trinh slippers", "phan duy trinh slippers", "phan quan trinh slippers", "phan dua trinh slippery", "phan dua 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: (((("phan dua 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: (((("phan dua trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan dua trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan dua trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.