Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khai hoan du snippets" » "khac hoang du snippets", "thai hoang du snippets", "phap hoan du snippets", "khai hoang du snippets", "khai toan du snippets", "khai han du 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: (((("khai hoan 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: (((("khai hoan du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khai hoan du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khai hoan du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.