Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van dung do snippets" » "van dung code snippets", "van dong do snippets", "xay dung do snippets", "tin dung do snippets", "van dung doi snippets", "van dung co snippets", "van dung de snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data 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 dung do snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( van dung do snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van dung do snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.