Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xet cong cua snippets" » "xuat cong cua snippets", "te cong cua snippets", "ve cong cua snippets", "xet cong cu snippets", "xet dong cua snippets", "xet huong cua 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: (((("xet cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xet cong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xet cong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xet cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.