Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoa dan da snippets" » "khoa dan code snippets", "khoa dang da snippets", "hoa dan da snippets", "khoa can da snippets", "khoa dan dat snippets", "khoa dan ca snippets", "khoa dan va 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: (((("khoa dan da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa dan da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoa dan da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa dan da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.