Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"nao tu cao snippets" » "nao tu code snippets", "tao tu cao snippets", "lao tu cao snippets", "cao tu cao snippets", "nao cu cao snippets", "nao tu cac snippets", "nao 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: (((("nao 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: (((("nao tu cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( nao tu cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nao tu cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.