Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong thuc te snippets" » "dong thuoc te snippets", "duong thuc te snippets", "cong thuc te snippets", "dong thuc ve snippets", "dong thuc tien snippets", "dong thuc tin 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: (((("dong thuc te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong thuc te snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong thuc te snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong thuc te snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.