Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets", "python missing data slippers"
"ma hoa dan snippets" » "ma khoa dan snippets", "ma hoa dan slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("ma hoa dan snippets") or ("python missing data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ma hoa dan snippets") OR ("python missing data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ma hoa dan snippets ) or ( python missing data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ma hoa dan snippets") or ("python missing data snippets"))) or ("locating bug code snippets"))*.