Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau canh cua snippets" » "hau can cua snippets", "ha canh cua snippets", "hau thanh cua snippets", "hau manh cua snippets", "hau hanh cua snippets", "hau anh cua 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: (((("hau canh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hau canh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hau canh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau canh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.