Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi viet cua snippets" » "chi tiet cua snippets", "thi viet cua snippets", "che viet cua snippets", "chi viec cua snippets", "chi viet ca snippets", "chi viet qua 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: (((("chi viet 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: (((("chi viet cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi viet cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi viet cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.