Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban su hoan snippets" » "ban su han snippets", "ban vu hoan snippets", "ban thu hoan snippets", "ban sua hoan snippets", "dan su hoan snippets", "van su hoan 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: (((("ban su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.