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