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