Perhaps you should try some spelling variations:
"dang su chat snippets" » "dang su code snippets", "dang su phat snippets", "dang du chat snippets", "dang so chat snippets", "dan su chat snippets", "dung su chat snippets", "dong su chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("dang su chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang su chat snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dang su chat snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang su chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.