Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"tu chon tran snippets" » "tu thong tran snippets", "tu chon trong snippets", "tu chon trung snippets", "tu choi tran snippets", "tu hon tran snippets", "lua chon tran 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 chon tran 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 chon tran snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( tu chon tran snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tu chon tran snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.