Perhaps you should try some spelling variations:
"vien trung java slippers" » "vien truong java slippers", "viet trung java slippers", "mien trung java slippers", "vien trung va slippers", "vien trinh java slippers", "vien trung java slippery", "vien trung java grippers"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low 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: (((("vien trung java slippers") or ("using raw java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vien trung java slippers") OR ("using raw java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vien trung java slippers ) or ( using raw java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vien trung java slippers") or ("using raw java snippets"))) or ("locating bug code snippets"))*.