Perhaps you should try some spelling variations:
"n trinh toan grippers" » "n trinh soft grippers", "n tinh toan grippers", "n thanh toan grippers", "n trinh han grippers", "p trinh toan grippers", "anh trinh toan grippers", "dan trinh toan grippers"
"python using java slippers" » "python using data slippers", "python using 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: (((("n trinh toan grippers") or ("python using java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("n trinh toan grippers") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( n trinh toan grippers ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("n trinh toan grippers") or ("python using java slippers"))) or ("locating bug code snippets"))*.