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