Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son trung do snippets" » "son truong do snippets", "san trung do snippets", "con trung do snippets", "son trung bo snippets", "son trung co snippets", "son trung 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: (((("son trung 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: (((("son trung do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son trung do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son trung do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.