Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dat danh cau snippets" » "dat danh code snippets", "dat anh cau snippets", "dai danh cau snippets", "dao danh cau snippets", "dat danh dau snippets", "dat danh ca snippets", "dat danh hau 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: (((("dat danh cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat danh cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dat danh cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat danh cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.