Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thi cau snippets" » "do thi cau snippets", "dan thi cau snippets", "dang thi cau snippets", "dao thi chau snippets", "dao thi cu snippets", "dao thi cam 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: (((("dao thi 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: (((("dao thi cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thi cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thi cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.