Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den minh chi snippets" » "den tinh chi snippets", "dan minh chi snippets", "den sinh chi snippets", "den dinh chi snippets", "den linh chi snippets", "den minh chau 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: (((("den minh 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: (((("den minh chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den minh chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den minh chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.