Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc lam chat snippets" » "duc lam code snippets", "duc dam chat snippets", "duc luan chat snippets", "duc cao chat snippets", "duoc lam chat snippets", "duc nam chat snippets", "luc lam chat 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: (((("duc lam 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: (((("duc lam chat snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc lam chat snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc lam chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.