Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"thu bai toan snippets" » "thu bai code snippets", "thu bai tap snippets", "thu ban toan snippets", "thu hai toan snippets", "thu bao toan snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("thu bai toan snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu bai toan snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thu bai toan snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu bai toan snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.