Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van luong low snippets" » "van luong code snippets", "van duong low snippets", "van cuong low snippets", "nang luong low snippets", "van duong loi snippets", "van huong loi snippets", "van luong do snippets"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data 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 luong low snippets\") OR (\"using data java snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( van luong low snippets ) OR ( using data java snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van luong low snippets") OR ("using data java snippets"))) OR ("locating bug core snippets"))*.