Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"mat cua moi snippets" » "mat cua code snippets", "ma cua moi snippets", "manh cua moi snippets", "mang cua moi snippets", "mat cua mot snippets", "mat 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: (((("mat 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: (((("mat cua moi snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( mat cua moi snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat cua moi snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.