Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cha le toan snippets" » "cha le code snippets", "cha ke toan snippets", "cha le doan snippets", "cha le tuan snippets", "cha me toan snippets", "ha le toan snippets", "cua le toan 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cha le toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"cha le toan snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( cha le toan snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cha le toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.