Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thieu ve snippets" » "dan thiet ve snippets", "doan thien ve snippets", "dang thien ve snippets", "dan hieu ve snippets", "dan thiet ke snippets", "dan thieu so 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: (((("dan thieu 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: (((("dan thieu ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thieu ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thieu ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.