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