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