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"
"viet dung java snippets" » "viet hung java snippets", "viet huong java snippets", "viet trung java snippets", "viet dung va 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: (((("viet dung java snippets") or ("using data java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet dung java snippets") OR ("using data java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet dung java snippets ) or ( using data java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet dung java snippets") or ("using data java slippers"))) or ("locating bug code snippets"))*.