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