Perhaps you should try some spelling variations:
"nhat xuan trinh slippers" » "nhat qua trinh slippers", "nhat xuan dinh slippers", "nhat xuan kinh slippers", "nhat quang trinh slippers", "nhat ban trinh slippers", "nha quan trinh slippers", "nhat xuan trinh slippery", "nhat 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: (((("dung java java snippets") or ("nhat xuan trinh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("nhat xuan trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( nhat xuan trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("nhat xuan trinh slippers"))) or ("locating bug code snippets"))*.