Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi nao tom snippets" » "khi giao tom snippets", "khi nhan tom snippets", "khi ao tom snippets", "khi nam tom snippets", "khi nuoi tom 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: (((("khi nao tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi nao tom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi nao tom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi nao tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.