Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"o nghiep cua snippets" » "o nghiep code snippets", "o nghiep vua snippets", "o nghiep luan snippets", "o nghien cuu snippets", "co nghiep cua snippets", "_ nghiep cua snippets", "tot nghiep cua 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: (((("o nghiep cua snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("o nghiep cua snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( o nghiep cua snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("o nghiep cua snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.