Perhaps you should try some spelling variations:
"python missing data snippets" » "python using data snippets"
"thi loan o snippets" » "thi lan o snippets", "thi hoan o snippets", "thi lien o snippets", "thi doan o snippets", "thi toan o snippets"
"locating bug code snippets" » "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: (((("thi loan o snippets") or ("python missing data snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi loan o snippets") OR ("python missing data snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi loan o snippets ) or ( python missing data snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi loan o snippets") or ("python missing data snippets"))) or ("locating bug code snippets"))*.