Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet bo so snippets" » "viet bao so snippets", "viet o so snippets", "viet co so snippets", "viet ho so snippets", "viet bo ho 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 bo so 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 bo so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet bo so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet bo so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.