Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van hoc can snippets" » "van hoc code snippets", "van hoa can snippets", "van hoc dan snippets", "van hoc cao snippets", "van hoc cac 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: "((((\"python using data snippets\") OR (\"van hoc can snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( python using data snippets ) OR ( van hoc can snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using data snippets") OR ("van hoc can snippets"))) OR ("locating bug core snippets"))*.