Perhaps you should try some spelling variations:
"he trung java slippers" » "he trung va slippers", "he trinh java slippers", "le trung java slippers", "he thong java slippers", "do trung java slippers", "he trung java slippery", "he trung java 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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("he trung java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( he trung java slippers ) or ( using java java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("he trung java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.