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