Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho khoa can snippets" » "chi khoa can snippets", "che khoa can snippets", "cao khoa can snippets", "cho khoa cam snippets", "cho khoa cap snippets", "cho khoi can 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 khoa can 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 khoa can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho khoa can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho khoa can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.