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