Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"dao voi dac snippets" » "da voi dac snippets", "dao noi dac snippets", "do voi dac snippets", "dao voi cac snippets", "dao voi dai snippets", "dao voi dan 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: "((((\"dao voi dac snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( dao voi dac snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dao voi dac snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.