Perhaps you should try some spelling variations:
"vu trinh toan grippers" » "vu trinh soft grippers", "vu tinh toan grippers", "vu thanh toan grippers", "vu trinh han grippers", "va trinh toan grippers", "qua trinh toan grippers", "quy trinh toan grippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

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