Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"man va cao snippets" » "mang va cao snippets", "manh va cao snippets", "ban va cao snippets", "man va cac snippets", "man va co snippets", "man va dao 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: (((("man va 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: (((("man va cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( man va cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("man va cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.