Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran nhat ca snippets" » "toan nha ca snippets", "tran chau ca snippets", "tran nhat cua snippets", "tran nhap ca snippets", "tran hat ca 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: (((("tran nhat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran nhat ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran nhat ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran nhat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.