Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai xu cua snippets" » "thai xu cua snippets", "hai vu cua snippets", "dai xu cua snippets", "hai hu cua snippets", "hai tu 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: (((("hai xu 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: (((("hai xu cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai xu cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai xu cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.