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