Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hanh toi du snippets" » "hanh thoi du snippets", "hanh noi du snippets", "hanh tot du snippets", "hanh toi uu snippets", "hanh tri du snippets", "hanh toi da 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: (((("hanh toi 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: (((("hanh toi du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh toi du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh toi du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.