Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao danh do snippets" » "dao danh code snippets", "dao doanh do snippets", "do danh do snippets", "dao dan do snippets", "dao dang do snippets", "dao danh co snippets", "dao danh di snippets"
"python using java snippets" » "python using data 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 danh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao danh do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao danh do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao danh do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.