Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac dich hoc snippets" » "cac dinh hoc snippets", "cap dich hoc snippets", "cay dich hoc snippets", "cac sinh hoc snippets", "cac hinh hoc snippets", "cac tinh 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: (((("cac dich 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: (((("cac dich hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac dich hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac dich hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.