Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ban dan doc snippets" » "ban dan code snippets", "ban hang doc snippets", "ban hanh doc snippets", "ban quan doc snippets", "ban dan toc snippets", "ban dan hoc snippets", "ban dan soc snippets"
"python using java snippets" » "python using 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: (((("ban dan doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban dan doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( ban dan doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dan doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.