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