Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao ngoc do snippets" » "van ngoc do snippets", "ma ngoc do snippets", "mai ngoc do snippets", "cao ngoc de snippets", "cao goc do snippets", "cao ngoc du 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: (((("cao ngoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao ngoc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao ngoc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao ngoc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.