Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"du hanh long snippets" » "du thanh long snippets", "du hanh dong snippets", "du hanh cong snippets", "dieu hanh long snippets", "luu hanh long snippets", "de thanh long 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: (((("du hanh long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("du hanh long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( du hanh long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("du hanh long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.