Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich dan ve snippets" » "lich danh ve snippets", "lich can ve snippets", "lich han ve snippets", "lich ban ve snippets", "lich dan va snippets", "lich dan viet 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 dan 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 dan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich dan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich dan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.