Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery", "python using java slippers"
"p trinh tai grippers" » "p trinh toan grippers", "p trinh tu grippers", "p trinh han grippers", "n trinh tai grippers", "lap trinh tai grippers", "co trinh tai grippers", "p trinh tai slippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets", "locating bug code slippers"

You may be able to get more results by adjusting your search query.

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