Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan tranh o snippets" » "tan tran o snippets", "can tranh o snippets", "lan tranh o snippets", "tan tranh co snippets", "tan trang o snippets", "tan trinh o 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 tranh o 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 tranh o snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan tranh o snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan tranh o snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.