Perhaps you should try some spelling variations:
"python using java grippers" » "python using data grippers", "python using java slippers"
"p trinh chi slippery" » "p trinh chiu slippery", "p trinh thi slippery", "p trinh cho slippery", "n trinh chi slippery", "lap trinh chi slippery", "co trinh chi slippery", "p trinh chi 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"python using java grippers\") OR (\"p trinh chi slippery\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( python using java grippers ) OR ( p trinh chi slippery ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java grippers") OR ("p trinh chi slippery"))) OR ("locating bug code snippets"))*.