Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi nao chat snippets" » "khi cao chat snippets", "khi tao chat snippets", "khi bao chat snippets", "khi giao chat snippets", "khi nhan chat 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 chat 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 chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi nao chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi nao chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.