Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tran dan den snippets" » "tran dan code snippets", "tran dang den snippets", "tran danh den snippets", "tran doan den snippets", "tran ban den snippets", "tran van den snippets", "tran dan dung 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: (((("tran dan den snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran dan den snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tran dan den snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran dan den snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.