Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"van luong tu snippets" » "van duong tu snippets", "van cuong tu snippets", "nang luong tu snippets", "van luong tai snippets", "van luong thi snippets", "van luong tin snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van luong tu snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"van luong tu snippets\") OR (\"using java java snippets\"))) OR (\"locating bug core snippets\"))*".
• Removing quotes may allow a broader search: (((( van luong tu snippets ) OR ( using java java snippets ))) OR ( locating bug core snippets ))*.