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