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