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