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