Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kiem tran ve snippets" » "kiem tra ve snippets", "kiem toan ve snippets", "kieu trang ve snippets", "kiem tran vu snippets", "kiem tran v snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("kiem tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kiem tran ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kiem tran ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kiem tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.