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