Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chun hoc can snippets" » "chung hoc can snippets", "chun ho can snippets", "chuan hoa can snippets", "chun hoc dan snippets", "chun hoc cao snippets", "chun hoc cac 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: (((("chun hoc 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: (((("chun hoc can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chun hoc can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chun hoc can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.