Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dep cua cham snippets" » "dep cua cha snippets", "dep qua cham snippets", "dep ca cham snippets", "de cua cham snippets", "det cua cham snippets", "dieu cua cham 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: (((("dep cua cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dep cua cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dep cua cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dep cua cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.