Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong luan du snippets" » "cong luan code snippets", "tong luan du snippets", "cong tuan du snippets", "dong luan du snippets", "cong xuan du snippets", "cong luat du snippets", "cong luan de 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 luan du 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 luan du snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong luan du snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong luan du snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.