Perhaps you should try some spelling variations:
"van trinh van snippets" » "van thinh van snippets", "van tinh van snippets", "dan trinh van snippets", "van trinh han snippets", "van trinh quan snippets", "van trinh toan snippets", "van trinh van slippers"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low java snippets", "using raw 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: "((((\"van trinh van snippets\") OR (\"using raw java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( van trinh van snippets ) OR ( using raw java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van trinh van snippets") OR ("using raw java snippets"))) OR ("locating bug code snippets"))*.