Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"che hien cau snippets" » "che bien cau snippets", "nghe hien cau snippets", "thi hien cau snippets", "che khien cau snippets", "che thien cau snippets", "che hien cac 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: (((("che hien cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("che hien cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( che hien cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("che hien cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.