Perhaps you should try some spelling variations:
"trong toan thuc slippers" » "truong toan thuc slippers", "trong tan thuc slippers", "trong hoan thuc slippers", "trong toan hoc slippers", "trong dan thuc slippers", "trong nhan thuc slippers", "trong toan thuc grippers"
"dung java java slippery" » "dung va java slippery"
"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 ("trong toan thuc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java slippery") OR ("trong toan thuc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java slippery ) or ( trong toan thuc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java slippery") or ("trong toan thuc slippers"))) or ("locating bug code snippets"))*.