Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"tu trac cung snippets" » "tu trac code snippets", "tu trac trung snippets", "tu tran cuong snippets", "tu tran hung snippets", "tu truc cung snippets", "ty trach cung snippets", "tap trac cung 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: (((("tu trac cung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu trac cung snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tu trac cung snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu trac cung snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.