Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tra cau danh snippets" » "tra cao danh snippets", "tra chuc danh snippets", "tra nam danh snippets", "tra sau danh snippets", "ta cau danh snippets", "tra cuu danh 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: (((("tra cau danh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tra cau danh snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tra cau danh snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tra cau danh snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.