Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu canh co snippets" » "thuc hanh co snippets", "thu cong co snippets", "thu ban co snippets", "thu anh co snippets", "thu danh co snippets", "thu lanh co 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 co 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 co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu canh co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu canh co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.