Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chau hung ca snippets" » "khau hung ca snippets", "chau phong ca snippets", "chau quang ca snippets", "chau nhung ca snippets", "chau hang ca snippets", "chau hung ha 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: (((("chau hung 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: (((("chau hung ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chau hung ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chau hung ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.