Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thi nhan con snippets" » "tri nhan con snippets", "thi than con snippets", "thi ngan con snippets", "thi nhan co snippets", "thi nhanh cong snippets", "thi phan cong 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: (((("thi nhan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi nhan con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi nhan con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi nhan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.