Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat anh cho snippets" » "sat anh cho snippets", "dat khanh cho snippets", "nhat anh cho snippets", "dat danh cho snippets", "dat anh tho snippets", "dat anh co 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: (((("dat anh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat anh cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat anh cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat anh cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.