Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bai luat cua snippets" » "bai luan cua snippets", "thai luat cua snippets", "bai lluan cua snippets", "bai luat sua snippets", "bai xuat cua snippets", "bai lua 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: (((("bai luat 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: (((("bai luat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bai luat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bai luat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.