Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi ngan con snippets" » "thi ngan con snippets", "chinh ngan con snippets", "chi nhanh con snippets", "chi ngan can snippets", "chi ngan gon snippets", "chi nhan con 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: (((("chi ngan 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: (((("chi ngan con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi ngan con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi ngan con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.