Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java snippets"
"viet tran van snippets" » "viet trang van snippets", "viet tuan van snippets", "viet trung van snippets", "viet luan van snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using data java snippets") OR ("viet tran van snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using data java snippets\") OR (\"viet tran van snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( using data java snippets ) OR ( viet tran van snippets ))) OR ( locating bug core snippets ))*.