Perhaps you should try some spelling variations:
"viet trinh da slippers" » "viet trung da slippers", "viet thanh da slippers", "viet trong da slippers", "viet trinh dan slippers", "viet trinh dao slippers", "viet trinh do slippers", "viet trinh da slippery", "viet trinh da grippers"
"using java java snippets" » "using data 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: (((("viet trinh da slippers") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet trinh da slippers") OR ("using java java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( viet trinh da slippers ) or ( using java java snippets ))) or ( locating bug code snippets ))*.