Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac ket doan snippets" » "tac ket hoa snippets", "tac le doan snippets", "tac ket van snippets", "tac ke doan snippets", "cac ket doan snippets", "tac kiem doan 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 ket doan 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 ket doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac ket doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac ket doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.