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 dung raw snippets" » "van dong raw snippets", "xay dung raw snippets", "tin dung raw snippets", "van dung va snippets", "van dung tai snippets", "van dung dat snippets", "van dung 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.

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