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