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"
"nhan dan tac snippets" » "phan dau tac snippets", "gian dan tac snippets", "nhan tai tac snippets", "nhan dan toc snippets", "nhan dan bac snippets", "nhan dan tay 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: (((("nhan dan tac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhan dan tac snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nhan dan tac snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dan tac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.