Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong luat da snippets" » "cong luat code snippets", "cong suat da snippets", "cong luan da snippets", "cuong luan da snippets", "cong luat dat snippets", "cong luat dan snippets", "cong luat dau 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: (((("cong luat 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: (((("cong luat da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong luat da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong luat da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.