Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bieu toan cu snippets" » "hieu toan cu snippets", "kiem toan cu snippets", "bien soan cu snippets", "bieu toan cau snippets", "bieu toan cua snippets", "bieu toan co 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: (((("bieu toan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bieu toan cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bieu toan cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bieu toan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.