Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using sat snippets" » "python using data snippets", "python using a snippets", "python using raw snippets"
"phan duc duat snippets" » "pham duc duat snippets", "phan tu duat snippets", "phan dau duat snippets", "phan duc luat snippets", "phan duc dai snippets", "phan duc dung 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: (((("phan duc duat snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan duc duat snippets") OR ("python using sat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan duc duat snippets ) or ( python using sat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan duc duat snippets") or ("python using sat snippets"))) or ("locating bug core snippets"))*.