Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van dung de snippets" » "van dung code snippets", "van dong de snippets", "xay dung de snippets", "tin dung de snippets", "van dung he snippets", "van dung dat snippets"
"using java java snippets" » "using data java 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: "((((\"van dung de snippets\") OR (\"using java java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( van dung de snippets ) OR ( using java java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van dung de snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))*.