Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"chat hoc da snippets" » "chat hoc code snippets", "chat hoa da snippets", "chat thom da snippets", "cho hoc da snippets", "chat hoc dan snippets", "chat hoc dai snippets", "chat hoc dat 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: (((("chat hoc da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chat hoc da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( chat hoc da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chat hoc da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.