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