Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"n trinh quan slippers" » "n tinh quang slippers", "n trinh luat slippers", "n trinh han slippers", "p trinh quan slippers", "anh trinh quan slippers", "dan trinh quan slippers", "n trinh quan 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 quan 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 quan slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( n trinh quan slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("n trinh quan slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.