Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"khoan ke cac snippets" » "khoan ke code snippets", "khoan le cac snippets", "khoan va cac snippets", "toan ke cac snippets", "khoan ke cau snippets", "khoan ve cac snippets", "khoan de cac 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: (((("khoan ke cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoan ke cac snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( khoan ke cac snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoan ke cac snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.