Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mong luat du snippets" » "mong luan du snippets", "cong suat du snippets", "tong luan du snippets", "mong luat dau snippets", "mong luat su snippets", "mong luat tu 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: (((("mong luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mong luat du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mong luat du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mong luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.