Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"n trinh toan slippers" » "n tinh toan slippers", "n thanh toan slippers", "n trinh han slippers", "p trinh toan slippers", "anh trinh toan slippers", "dan trinh toan slippers", "n trinh toan 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("n trinh toan slippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("n trinh toan slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( n trinh toan slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("n trinh toan slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.