Perhaps you should try some spelling variations:
"vien trung va snippets" » "vien truong va snippets", "viet trung va snippets", "mien trung va snippets", "vien trang va snippets", "vien trung ha snippets", "vien trung va slippers"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low java snippets", "using raw java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"vien trung va snippets\") OR (\"using raw java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( vien trung va snippets ) OR ( using raw java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vien trung va snippets") OR ("using raw java snippets"))) OR ("locating bug code snippets"))*.