Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban cong co snippets" » "bang cong co snippets", "van cong co snippets", "phan cong co snippets", "ban dong co snippets", "ban cong cu snippets", "ban cong so 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: (((("ban cong co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban cong co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban cong co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban cong co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.