Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using data java slippery" » "using java java slippery", "using sat java slippery", "missing data java slippery", "using data java slippers"
"van tai java snippets" » "van tai va snippets", "von tai java snippets", "van tuan java 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 tai java snippets\") OR (\"using data java slippery\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( van tai java snippets ) OR ( using data java slippery ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van tai java snippets") OR ("using data java slippery"))) OR ("locating bug core snippets"))*.