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