Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich danh mo snippets" » "tich danh mo snippets", "minh danh mo snippets", "dich anh mo snippets", "lich dan mo snippets", "lich danh co snippets", "lich danh o 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 danh mo 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 danh mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich danh mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich danh mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.