Perhaps you should try some spelling variations:
"hoi tai chat snippets" » "hoi tai code snippets", "hoi tao chat snippets", "hoi tri chat snippets", "hoi ta chat snippets", "hoc tai chat snippets", "hoi trac chat snippets"
"locating bug core snippets" » "locating bug code 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: (((("python using data snippets") or ("hoi tai chat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using data snippets") OR ("hoi tai chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using data snippets ) or ( hoi tai chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using data snippets") or ("hoi tai chat snippets"))) or ("locating bug core snippets"))*.