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