Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trong co hoi snippets" » "trong ca hoi snippets", "trong cong hoi snippets", "trong cuoc hoi snippets", "trong co hoc snippets", "trong co loi 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: (((("trong co hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong co hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong co hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong co hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.