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 java snippets" » "van dung va snippets", "van dong java snippets", "xay dung java snippets", "tin dung java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using data java slippers") or ("van dung java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data java slippers") OR ("van dung java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using data java slippers ) or ( van dung java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data java slippers") or ("van dung java snippets"))) or ("locating bug code snippets"))*.