Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet cap can snippets" » "viet ca can snippets", "viet cau can snippets", "viet gap can snippets", "viet cap han snippets", "viet cap van snippets", "viet tap can 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 cap can 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 cap can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet cap can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet cap can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.