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