Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich su hoan snippets" » "lich su han snippets", "lich vu hoan snippets", "lich thu hoan snippets", "dich su hoan snippets", "tich su hoan snippets", "linh 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: (((("lich 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: (((("lich su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.