Perhaps you should try some spelling variations:
"p trinh san grippers" » "p trinh soft grippers", "p trinh han grippers", "p trinh quan grippers", "p trinh toan grippers", "n trinh san grippers", "lap trinh san grippers", "co trinh san grippers"
"python using java slippery" » "python using data slippery", "python using java 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 san 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 san grippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( p trinh san grippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("p trinh san grippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.