Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bich tran ve snippets" » "tich than ve snippets", "tich toan ve snippets", "bich loan ve snippets", "bich tran vu snippets", "bich toan ve snippets", "bich 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: (((("bich 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: (((("bich tran ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bich tran ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bich tran ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.