Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son vinh ve snippets" » "son binh ve snippets", "son tinh ve snippets", "cong vinh ve snippets", "son dinh ve snippets", "son kinh ve snippets", "son minh ve 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: (((("son vinh 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: (((("son vinh ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son vinh ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son vinh ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.