Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc doi chu snippets" » "cuoc doi chu snippets", "quoc hoi chu snippets", "luoc doi chu snippets", "quoc doi thu snippets", "quoc doi chi 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: (((("quoc doi chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc doi chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc doi chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc doi chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.