Perhaps you should try some spelling variations:
"viet truong va snippets" » "viet trung va snippets", "vien truong va snippets", "viet trong va snippets", "viet truong dai snippets", "viet truong cao snippets", "viet truong dao snippets", "viet truong 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("viet truong va snippets") or ("using raw java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet truong va snippets") OR ("using raw java snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( viet truong va snippets ) or ( using raw java snippets ))) or ( locating bug code snippets ))*.