Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"quy trinh vat slippers" » "qua trinh vat slippers", "quy dinh vat slippers", "quy trinh van slippers", "quy trinh luat slippers", "quy sinh vat slippers", "quy trinh vat slippery", "quy trinh vat grippers"
"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: (((("quy trinh vat slippers") OR ("using java java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( quy trinh vat slippers ) or ( using java java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("quy trinh vat slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.