Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nin thi hoan snippets" » "nin thi hoa snippets", "nin thi hanh snippets", "nin thi hong snippets", "nhin thi hoan snippets", "ninh thi hoan snippets", "ninh thai 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: (((("nin thi 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: (((("nin thi hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nin thi hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nin thi hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.