Perhaps you should try some spelling variations:
"dung java java slippery" » "dung va java slippery", "dung java java slippers"
"phan trac hoc snippets" » "phan tap hoc snippets", "phan cac hoc snippets", "phan tan hoc snippets", "phan toan hoc snippets", "phan thai hoc snippets", "phan toc hoc 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java slippery") or ("phan trac hoc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java slippery") OR ("phan trac hoc snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( dung java java slippery ) or ( phan trac hoc snippets ))) or ( locating bug code snippets ))*.