Perhaps you should try some spelling variations:
"danh viet trinh slippers" » "danh viet trung slippers", "danh viet thanh slippers", "danh viet trong slippers", "anh viet trinh slippers", "ninh viet trinh slippers", "nang viet trinh slippers", "danh viet trinh slippery", "danh viet 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"

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 ("danh viet 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 ("danh viet trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( danh viet trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("danh viet trinh slippers"))) or ("locating bug code snippets"))*.