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