Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho minh he snippets" » "chi minh he snippets", "cho sinh he snippets", "cao minh he snippets", "cho minh hue snippets", "cho hinh he snippets", "cho minh ve 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho minh he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho minh he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.