Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"minh dan cac snippets" » "minh danh cac snippets", "minh doan cac snippets", "binh dan cac snippets", "minh dan cach snippets", "minh dang cac snippets", "minh dan ca 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: (((("minh dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("minh dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( minh dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("minh dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.