Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nin hang ca snippets" » "ngan hang ca snippets", "minh hang ca snippets", "ninh mang ca snippets", "nin hang va snippets", "nin nang cao snippets", "nin hang tai 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: (((("nin hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nin hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nin hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nin hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.