Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tot hung chu snippets" » "tot cung chu snippets", "thpt hung chu snippets", "tot thang chu snippets", "tot nhung chu snippets", "tot hung thu snippets", "tot chung chou 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: (((("tot hung chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tot hung chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tot hung chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tot hung chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.