Perhaps you should try some spelling variations:
"thai doan o snippets" » "chan doan o snippets", "tap doan o snippets", "giai doan o snippets", "thai doan do snippets", "thai doan _ snippets", "thai toan o snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw 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: (((("thai doan o snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thai doan o snippets") OR ("python using sat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thai doan o snippets ) or ( python using sat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thai doan o snippets") or ("python using sat snippets"))) or ("locating bug code snippets"))*.