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