Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho hoc cu snippets" » "co hoc cu snippets", "khoa hoc cu snippets", "cho hoc cua snippets", "cho hoc cau snippets", "cho hoc chu 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 hoc cu 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 hoc cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho hoc cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho hoc cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.