Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach viet di snippets" » "bac viet di snippets", "anh viet di snippets", "danh viet di snippets", "bach viet doi snippets", "bach viet da snippets", "bach viet du 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: (((("bach viet 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: (((("bach viet di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach viet di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach viet di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.