Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho minh de snippets" » "chi minh de snippets", "cho sinh de snippets", "cao minh de snippets", "cho minh ve snippets", "cho menh de 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: (((("cho minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho minh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho minh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho minh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.