Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh cua moi snippets" » "danh cua code snippets", "doanh cua moi snippets", "manh cua moi snippets", "dinh cua moi snippets", "danh cua mot snippets", "danh cua hoi 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: (((("danh cua moi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cua moi snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh cua moi snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cua moi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.