Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao minh cu snippets" » "cao minh cu snippets", "van minh cu snippets", "duc minh cu snippets", "dao minh cau snippets", "dao dinh cu snippets", "dao minh tu 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: (((("dao minh 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: (((("dao minh cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao minh cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao minh cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.