Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao thi cap snippets" » "cau thi cap snippets", "cao tai cap snippets", "dao thi cap snippets", "cao thi chap snippets", "cao thi cam snippets", "cao thi ca 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: (((("cao thi cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao thi cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao thi cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao thi cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.