Perhaps you should try some spelling variations:
"cha me toan snippets" » "cha me code snippets", "cha ke toan snippets", "cha le toan snippets", "cha mon toan snippets", "chat me toan snippets", "chua me toan snippets", "chan me toan snippets"
"locating bug core snippets" » "locating bug code 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: "((((\"cha me toan snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( cha me toan snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("cha me toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.