Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham cao cong snippets" » "ham cac cong snippets", "ham cao dang snippets", "ham cua cong snippets", "nam cao cong snippets", "dam cao cong snippets", "pham can cong 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: (((("ham cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ham cao cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham cao cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham cao cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.