Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doc tien hoa snippets" » "doc tieng hoa snippets", "duc tien hoa snippets", "do tien hoa snippets", "doc dien hoa snippets", "doc trien hoat snippets", "doc tien va 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: (((("doc tien hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doc tien hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc tien hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc tien hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.