Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc dan cac snippets" » "luoc danh cac snippets", "luoc dai cac snippets", "luoc can cac snippets", "luoc dan cach snippets", "luoc dang cac snippets", "luoc 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: (((("luoc 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: (((("luoc dan cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc dan cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc dan cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.