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 luan van snippets" » "vien luan van snippets", "viet quan van snippets", "viet tuan 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 luan van snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data java snippets") OR ("viet luan van snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using data java snippets ) or ( viet luan van snippets ))) or ( locating bug core snippets ))*.