Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tct viet con snippets" » "tich viet con snippets", "ptnt viet con snippets", "thi viet con snippets", "tct viet co snippets", "tct diet con snippets", "tct giet 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: (((("tct viet 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: (((("tct viet con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tct viet con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tct viet con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.