Perhaps you should try some spelling variations:
"data using java slippers" » "data using data slippers", "data using java slippery", "data using java grippers"
"cong trinh tu snippets" » "cong trinh ky snippets", "cong trinh do 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.

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