Perhaps you should try some spelling variations:
"pham xuan trinh slippers" » "pham qua trinh slippers", "pham xuan dinh slippers", "pham xuan kinh slippers", "pham luan trinh slippers", "pham quang trinh slippers", "pham van trinh slippers", "pham xuan trinh slippery", "pham xuan 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: (((("pham xuan 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: (((("pham xuan trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham xuan trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham xuan trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.