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