Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"van dung van snippets" » "van dong van snippets", "xay dung van snippets", "tin dung van snippets", "van duong van snippets", "van dung va snippets", "van dang van snippets"

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

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