Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ham bai cong snippets" » "ham tai cong snippets", "ham bi cong snippets", "ham ban cong snippets", "pham bao cong snippets", "cham lai cong snippets", "ham khai 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 bai 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 bai cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ham bai cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ham bai cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.