Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"da viet tue snippets" » "da viet tu snippets", "da vien tue snippets", "da viet tuyen snippets", "dao viet tue snippets", "dai viet tue snippets", "dan viet tue 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: (((("da viet tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("da viet tue snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( da viet tue snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("da viet tue snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.