Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung de cac snippets" » "dung de code snippets", "dung he cac snippets", "dung dat cac snippets", "dung den cac snippets", "dung ve cac snippets", "dung de cai 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: (((("dung de cac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung de cac snippets") OR ("python using data snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung de cac snippets ) or ( python using data snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung de cac snippets") or ("python using data snippets"))) or ("locating bug core snippets"))*.