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