Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vi dung cho snippets" » "vi dung code snippets", "va dung cho snippets", "vi ung cho snippets", "vi dong cho snippets"
"missing data java snippets" » "using data java snippets", "missing java java snippets"

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

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