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