Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim tung do snippets" » "kim dung do snippets", "kim sung do snippets", "kim thuong do snippets", "kim trung do snippets", "kim tung ho 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: (((("kim tung 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: (((("kim tung do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim tung do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim tung do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.