Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan tran so snippets" » "tan tran si snippets", "tan tran sy snippets", "tan than so snippets", "toan tran so snippets", "than tran so snippets", "tuan tran so 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: (((("tan tran 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: (((("tan tran so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan tran so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan tran so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.