Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tran nhat di snippets" » "toan nha di snippets", "tran chau di snippets", "tran chat di snippets", "tran nhat de snippets", "tran nhat ki 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: (((("tran nhat di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran nhat di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran nhat di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran nhat di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.