Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"sang sach mo snippets" » "mang sach mo snippets", "sang tac mo snippets", "ban sach mo snippets", "sang sach moi snippets", "sang sach lo snippets", "sang sach dao 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: (((("sang sach mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sang sach mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sang sach mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sang sach mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.