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