Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau qua cua snippets" » "thau qua cua snippets", "cau qua cua snippets", "rau qua cua snippets", "hau quan cua snippets", "hau quang cua snippets", "hau qua quan 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 qua 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 qua cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hau qua cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau qua cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.