Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi cham cua snippets" » "hoi chuc cua snippets", "hoi chu cua snippets", "toc cham cua snippets", "hoi chat cua snippets", "hoi cham cuu snippets", "hoi ham 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: (((("hoi cham 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: (((("hoi cham cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi cham cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi cham cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.