Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"danh cho c1 snippets" » "danh cho ca snippets", "danh cho cu snippets", "danh cho k1 snippets", "doanh cho c1 snippets", "dan cho c1 snippets", "dinh cho c1 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: (((("danh cho c1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh cho c1 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( danh cho c1 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh cho c1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.