Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using real snippets" » "python using metal snippets", "python using raw snippets"
"thi cao ngoc snippets" » "thi van ngoc snippets", "thi ma ngoc snippets", "thi mai ngoc snippets", "thai cao ngoc snippets", "thi hao ngoc snippets", "thi bao ngoc 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: (((("thi cao ngoc snippets") or ("python using real snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi cao ngoc snippets") OR ("python using real snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( thi cao ngoc snippets ) or ( python using real snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi cao ngoc snippets") or ("python using real snippets"))) or ("locating bug core snippets"))*.