Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vuc phan cau snippets" » "vuc phan code snippets", "duc phan cau snippets", "thuc phan cau snippets", "hoc phan cau snippets", "vuc phan dau snippets", "vuc phan cac snippets", "vuc phan tu 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: (((("vuc phan 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: (((("vuc phan cau snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vuc phan cau snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vuc phan cau snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.