Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san viet cao snippets" » "gian viet cao snippets", "anh viet cao snippets", "san vien cao snippets", "san viet co snippets", "san viet ca 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: (((("san viet 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: (((("san viet cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san viet cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san viet cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.