Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac nam nghe snippets" » "cac nang nghe snippets", "cac van nghe snippets", "bac nam nghe snippets", "cac cam nghe snippets", "cac ham nghe 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: (((("cac nam nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac nam nghe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac nam nghe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac nam nghe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.