Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong dan cu snippets" » "trong dang cu snippets", "trong san cu snippets", "trong tan cu snippets", "trong dan cua snippets", "trong dan ca snippets", "trong 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: (((("trong 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: (((("trong dan cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong dan cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong dan cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.