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