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