Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dam van toan snippets" » "dam van code snippets", "dam van tuan snippets", "dam van tan snippets", "dam van thanh snippets", "dao van toan snippets", "nam van toan snippets", "pham van 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: (((("dam van 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: "((((\"dam van toan snippets\") OR (\"python using data snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( dam van toan snippets ) OR ( python using data snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam van toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets"))*.