Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thi toan co snippets" » "thi toan code snippets", "thi tran co snippets", "thi hoan co snippets", "thi loan co snippets", "thi toan cao snippets", "thi toan ho snippets", "thi toan hoc 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: "((((\"thi toan co snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( thi toan co snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("thi toan co snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.