Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong nhat ke snippets" » "dang nhat ke snippets", "cong nhat ke snippets", "dung nhat ke snippets", "dong nhat ve snippets", "dong nhat ky snippets", "dong nhat le 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 nhat ke 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 nhat ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong nhat ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong nhat ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.