Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"dai duong van slippers" » "dai cuong van slippers", "hai duong van slippers", "dai luong van slippers", "dai duong va slippers", "dai luong va slippers", "dai dang van slippers", "dai duong van slippery", "dai duong van grippers"
"locating bug code snippets" » "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: "((((\"using java java snippets\") OR (\"dai duong van slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java java snippets ) OR ( dai duong van slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") OR ("dai duong van slippers"))) OR ("locating bug code snippets"))*.