Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet so con snippets" » "viec so con snippets", "viet o con snippets", "viet co con snippets", "viet so cong snippets", "viet sao con snippets", "viet son con 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: (((("viet so con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet so con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet so con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet so con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.