Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich cua hoc snippets" » "ich cua hoc snippets", "dich cua hoc snippets", "kich cua hoc snippets", "lich cua hoi snippets", "lich cua thuoc snippets", "lich cua nuoc 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: (((("lich cua 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: (((("lich cua hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich cua hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich cua hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.