Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoa can dot snippets" » "khoa can code snippets", "khoa cam dot snippets", "khoa cap dot snippets", "khoi can dot snippets", "khoa can dong snippets", "khoa cong dot snippets", "khoa nhan dot 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 can dot 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 can dot snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoa can dot snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa can dot snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.