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