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