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