Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using data snippets" » "python using java snippets", "python using sat snippets", "python missing data snippets"
"roi duoc dai snippets" » "roi nuoc dai snippets", "hoa duoc dai snippets", "hoc duoc dai snippets", "roi duc dai snippets", "roi luoc dai snippets", "roi duoc dan 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: (((("roi duoc dai snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("roi duoc dai snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( roi duoc dai snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("roi duoc dai snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.