Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua hang ca snippets" » "cua hang ca snippets", "dua lang ca snippets", "mua hang ca snippets", "dua hang va snippets", "dua nang cao snippets", "dua 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: (((("dua 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: (((("dua hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.