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