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