Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac danh cad snippets" » "sach danh cad snippets", "cac doanh cad snippets", "cac dan cad snippets", "tac danh ca snippets", "tac danh cau snippets", "tac hanh cad 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: (((("tac danh cad snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac danh cad snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac danh cad snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac danh cad snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.