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