Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"doan bieu do snippets" » "doan bieu code snippets", "doan dieu do snippets", "doanh hieu do snippets", "doanh sieu do snippets", "doan bien do snippets", "doan bieu o snippets", "doan bien doi 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: (((("doan bieu do snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan bieu do snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( doan bieu do snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan bieu do snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.