Perhaps you should try some spelling variations:
"van thinh java slippery" » "van trinh java slippery", "van think java slippery", "van thanh java slippery", "van chinh java slippery", "van minh java slippery", "van thinh java 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: "((((\"using raw java snippets\") OR (\"van thinh java slippery\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using raw java snippets ) OR ( van thinh java slippery ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using raw java snippets") OR ("van thinh java slippery"))) OR ("locating bug code snippets"))*.