Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"ban danh doc snippets" » "ban danh code snippets", "ban doanh doc snippets", "ban hanh doc snippets", "ban dan doc snippets", "ban anh doc snippets", "ban dinh doc snippets", "ban danh hoc 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 danh 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 danh doc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( ban danh doc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban danh doc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.