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