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